The book's references — the **books, papers, and sites** cited throughout — collected in one place. Every in-text citation (written `[@key]` in the drafts) links here, and in the HTML build hovering a citation shows the full reference as a tooltip.

The list is maintained as machine-readable data in [[bibliography|Sources/bibliography.md]] and **rendered** to the bibliography page, grouped into **Textbooks & books**, **Papers**, and **Web, standards & misc**, sorted alphabetically. Each entry carries a stable **citation key**; drafts cite it as `[@key]` (optionally `[@key|custom text]`).

*(The rendered list is generated — edit `Sources/bibliography.md` and rebuild rather than hand-editing the page.)*