Dyfyniad APA

Sommerville, I. (1985). Software engineering (2nd ed.). Addison-Wesley.

Dyfyniad Arddull Chicago

Sommerville, Ian. Software Engineering. 2nd ed. Wokingham, Eng. ; Reading, Mass.: Addison-Wesley, 1985.

Dyfyniad MLA

Sommerville, Ian. Software Engineering. 2nd ed. Addison-Wesley, 1985.

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