APA (7th ed.) Zitazioa
Edwards, P. (1985). Systems analysis, design, and development with structured concepts. Holt, Rinehart, and Winston.
Chicago Style (17th ed.) Zitazioa
Edwards, Perry. Systems Analysis, Design, and Development with Structured Concepts. New York: Holt, Rinehart, and Winston, 1985.
MLA (9th ed.) Zitazioa
Edwards, Perry. Systems Analysis, Design, and Development with Structured Concepts. Holt, Rinehart, and Winston, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.