⚙ Tinkers Space
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How to Cite Your Sources

Built on someone's work? Say so. Here's how to give credit properly — in papers, posts, and projects.

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Why Bother?

Citing isn't just academic box-ticking. It's how ideas trace their lineage — who thought it first, who proved it, who improved it. In an open workshop like this, credit is currency. It also protects you: showing your sources proves you did the work and lets others verify it.

✓ DoCite anything you didn't figure out yourself — equations, data, quotes, images, methods.
✗ Don'tAssume "everyone knows this" means you can skip it. When in doubt, cite.

The Big Three Styles

APA (7th edition) — Science & Social Science

Author-date format. Most common in STEM.

BookSchrödinger, E. (1935). Discussion of probability relations between separated systems. Cambridge University Press.
Journal articleEinstein, A., Podolsky, B., & Rosen, N. (1935). Can quantum-mechanical description of physical reality be considered complete? Physical Review, 47(10), 777–780.
In-text(Einstein et al., 1935)

MLA (9th edition) — Humanities

Author-page format. Common in literature, arts, and general writing.

BookSchrödinger, Erwin. What Is Life? Cambridge UP, 1944.
Website"Quantum Entanglement." Wikipedia, Wikimedia Foundation, 12 Oct. 2026, en.wikipedia.org/wiki/Quantum_entanglement.
In-text(Schrödinger 42)

Chicago (17th edition) — History & Publishing

Two systems: notes-bibliography (footnotes) and author-date. Flexible and thorough.

Footnote¹ Albert Einstein, Boris Podolsky, and Nathan Rosen, "Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?," Physical Review 47, no. 10 (1935): 777.
BibliographyEinstein, Albert, Boris Podolsky, and Nathan Rosen. "Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?" Physical Review 47, no. 10 (1935): 777–780.

Quick Format Cheat Sheet

Websites & Online Sources

Always include: author (if known), title, site name, publication/update date, and URL. Add the date you accessed it — web pages change.

APANational Institute of Standards and Technology. (2024). SI units. https://www.nist.gov/pml/owm/metric-si/si-units
Casual / blog / workshop postSource: NIST, "SI Units" (2024) — nist.gov/pml/owm/metric-si/si-units

Images, Diagrams & Figures

Credit the creator directly under the image. If you modified it, say so: "Adapted from…"

Caption formatFigure 1. Double-slit interference pattern. Image by [Creator Name], [Year]. Source: [URL]. Used under [license].

Code & Open Source

Link the repository, name the author, note the license.

FormatBased on [project name] by [author] ([license]) — github.com/user/project

AI Assistance

If an AI helped you write, calculate, or brainstorm, say so. Transparency builds trust.

FormatDrafted with assistance from [AI tool], [date]. All ideas and final content are the author's own.

Common Mistakes

Citing Wikipedia as a primary source. Wikipedia is a great starting point — cite the sources it cites, not the article itself, in formal work.

Forgetting the access date. Web content changes. "Retrieved October 14, 2026" tells readers what version you saw.

Close paraphrasing without citation. Rewording someone's paragraph isn't original work — it still needs a cite.

Citation stuffing. Don't cite ten sources when one solid one does the job. Quality over quantity.