Dyfyniad APA

Sommerville, I. (2004). Software engineering (7th ed.). Pearson/Addison-Wesley.

Dyfyniad Arddull Chicago

Sommerville, Ian. Software Engineering. 7th ed. Boston: Pearson/Addison-Wesley, 2004.

Dyfyniad MLA

Sommerville, Ian. Software Engineering. 7th ed. Pearson/Addison-Wesley, 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.