Object-oriented & classical software engineering, Stephen R. Schach, 2007, 618 pages, p., webpage: Book-Google-hWwh, quote: "Two acronyms now associated with extreme programming are YAGNI (you aren't gonna need it) and DTSTTCPW (do the simplest thing that could possibly work)."
Extreme Programming Installed, Ronald E. Jeffries, Ann Anderson, Chet Hendrickson, 2001, 265 pages, p. 190, webpage: Books-Google-dIsC, quote: "YAGNI: 'You Aren't Gonna Need It.' This slogan, one of XP's most famous..., reminds us always to work on the story we have, not something we think we're going to need."
Extreme Programming examined, Giancarlo Succi, Michele Marchesi, 2001, 569 pages, webpage: Books-Google-VSCh, quote: "XP says 'do the simplest thing that could possibly work ' because 'you aren't gonna need it'."
Martin Fowler; Kent Beck (8 July 1999). Refactoring: Improving the Design of Existing Code. Addison-Wesley Professional, 431 pages, p. 68, webpage: BGoogle-1M. ISBN978-0201485677. Quote: "you aren't going to need it".
Mary Poppendieck; Tom Poppendieck (2003). Lean Software Development: An Agile Toolkit, p.59, webpage: BGoogle-hQ. Quote: "Kent Beck, Extreme Programming Explained, Chapter 17, uses the acronym YAGNI (You Aren't Going to Need It) for this practice and explains its rationale."
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Russ Olsen (2007). Design Patterns in Ruby, p.13, webpage: [1]. ISBN9780321490452. Quote: "This design principle comes out of the Extreme Programmingworld and is elegantly summed up by the phrase You Ain't Gonna Need It (YAGNIfor short)."
