44:["$","title",null,{"children":"Plagx Cite: Free APA & MLA Citation Generator | Plagiarism Checker X | Observable"}] 4c:T607,## How it works - **DOI lookup** uses the free public Crossref API, with a doi.org fallback for DataCite DOIs. No API key is needed. - **BibTeX import** handles `@string` macros, LaTeX accents and BibLaTeX `date` / `journaltitle` fields. - **Duplicates** are references with the same DOI, or the same title and first author. - Titles are used exactly as you enter them: APA wants sentence case and MLA wants title case. Developer downloads: [npm](https://www.npmjs.com/package/plagx-cite) · [PyPI](https://pypi.org/project/plagx-cite/) · [NuGet](https://www.nuget.org/packages/Plagx.Cite) · [Maven Central](https://central.sonatype.com/artifact/io.github.plagiarismcheckerx/plagx-cite) · [GitHub](https://github.com/plagiarismcheckerx/plagx-cite) Need a quick citation for any style? Use the [free citation generator](https://plagiarismcheckerx.com/citation-generator?utm_source=plagx-cite-observable&utm_medium=notebook&utm_campaign=plagx&utm_content=citation-generator). ## Plagx Cite - Free Citation & Reference Toolkit Developed by Plagiarism Checker X. Plagx Cite helps with source attribution; it does not detect plagiarism or AI-generated text. For full document checks, explore [Plagiarism Checker X](https://plagiarismcheckerx.com/?utm_source=plagx-cite-observable&utm_medium=notebook&utm_campaign=plagx&utm_content=about-cta) and its [AI Content Detector](https://plagiarismcheckerx.com/ai-content-detector?utm_source=plagx-cite-observable&utm_medium=notebook&utm_campaign=plagx&utm_content=about-ai-detector). MIT License 4d:[] 48:{"id":"6c941f33966400c1","slug":"plagx-cite","title":"Plagx Cite: Free APA & MLA Citation Generator","thumbnail":"dc070a959115fb7e59e2bb6e6d7fa9c101a1b297e632aa8c72294ec44188206f","access_level":"public","create_time":"$D2026-10-26T10:28:54.546Z","update_time":"$D2026-10-26T10:41:26.047Z","view_time":null,"first_public_time":"$D2026-10-26T10:59:54.217Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"6cfedbf882de3b46","login":"plagiarismcheckerx","name":"Plagiarism Checker X","avatar_url":"https://avatars-next.observableusercontent.com/aa8d50802b867de2cadbf254640df3a0d7946c5e5145397a9b7915f591712c1c","tier":"free_2026","bio":"","followed_by_you":false,"follows_you":false},"version":41,"publish_version":41,"role":null,"authored":false,"authors":[{"type":"individual","id":"f7f0ca0eabb2e157","login":"plagiarismcheckerx","name":"Plagiarism Checker X","avatar_url":"https://avatars-next.observableusercontent.com/aa8d50802b867de2cadbf254640df3a0d7946c5e5145397a9b7915f591712c1c","tier":null,"bio":"","followed_by_you":false,"follows_you":false}],"members":[{"type":"team","id":"6cfedbf882de3b46","login":"plagiarismcheckerx","name":"Plagiarism Checker X","avatar_url":"https://avatars-next.observableusercontent.com/aa8d50802b867de2cadbf254640df3a0d7946c5e5145397a9b7915f591712c1c","tier":"free_2026","role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Plagx Cite: Free APA & MLA Citation Generator","cells":[{"id":7,"value":"# Plagx Cite: Free APA & MLA Citation Generator\n\n*A free academic writing tool by Plagiarism Checker X.*\n\nBuild a correctly formatted APA 7 or MLA 9 reference list with in-text citations. Look up a DOI, paste BibTeX, and spot duplicate references before you submit. Everything runs in your browser using the open-source [plagx-cite](https://www.npmjs.com/package/plagx-cite) package.\n\n**[Try the full live demo →](https://plagiarismcheckerx.github.io/plagx-cite/)** · [Source code on GitHub](https://github.com/plagiarismcheckerx/plagx-cite)\n","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"import * as cite from \"npm:plagx-cite@0.2.1\";\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":9,"value":"const style = view(Inputs.radio(new Map([[\"APA 7\", \"apa\"], [\"MLA 9\", \"mla\"]]), {label: \"Citation style\", value: \"apa\"}));\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"const doi = view(Inputs.text({label: \"DOI\", placeholder: \"e.g. 10.1038/nature14539\", submit: \"Look up\"}));","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":11,"value":"const bibtex = view(Inputs.textarea({\n label: \"BibTeX\",\n rows: 6,\n submit: \"Import\",\n value: `@book{booth2016,\n author = {Booth, Wayne C. and Colomb, Gregory G. and Williams, Joseph M.},\n title = {The craft of research},\n edition = {4},\n publisher = {University of Chicago Press},\n year = {2016}\n}`\n}));\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":12,"value":"const lookupError = [];\nconst references = cite.parseBibTeX(bibtex);\nif (doi.trim()) {\n try { references.push(await cite.lookupDOI(doi.trim())); }\n catch (err) { lookupError.push(err.message); }\n}\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":13,"value":"const sorted = cite.sortReferences(references);\nconst entries = cite.formatBibliography(sorted, {style, format: \"html\"});\nconst dupes = cite.findDuplicates(references);\nconst item = (ref, i) => {\n const p = html`

`;\n p.innerHTML = entries[i];\n p.append(html`
In text: ${cite.citeInText(ref, {style})}`);\n return p;\n};\ndisplay(html`

\n ${lookupError.map((m) => html`

${m}

`)}\n ${dupes.map((g) => html`

Possible duplicate (${g.reasons.join(\" and \")} match): “${references[g.indexes[0]].title}” appears ${g.indexes.length} times.

`)}\n

${style === \"apa\" ? \"References\" : \"Works Cited\"}

\n ${sorted.length ? sorted.map(item) : html`

No references yet.

`}\n

`);\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":14,"value":"const bibFile = URL.createObjectURL(new Blob([cite.toBibTeX(sorted)], {type: \"application/x-bibtex\"}));\ndisplay(html`Download references.bib`);\n","pinned":true,"hidden":false,"mode":"ts","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":15,"value":"$4c","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W4d","stdlib":"2"}} 24:null