Dyfyniad APA

Sommerville, I. (2011). Software engineering (9th ed.). Pearson.

Dyfyniad Arddull Chicago

Sommerville, Ian. Software Engineering. 9th ed. Boston ; New Delhi: Pearson, 2011.

Dyfyniad MLA

Sommerville, Ian. Software Engineering. 9th ed. Pearson, 2011.

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