APA aipamena

 Sommerville, I. (2011).  Software engineering.  Pearson.

Chicago Style aipamena

 Sommerville, Ian.  Software Engineering.  Pearson, 2011.

MLA aipamena

 Sommerville, Ian.  Software Engineering.  Pearson, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.