APA (7th ed.) Zitazioa
Sommerville, I. (2011). Software engineering (9th ed.). Pearson.
Chicago Style (17th ed.) Zitazioa
Sommerville, Ian. Software Engineering. 9th ed. Boston: Pearson, 2011.
MLA (9th ed.) Zitazioa
Sommerville, Ian. Software Engineering. 9th ed. Pearson, 2011.
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