Dyfyniad APA

Kagan, A. (1987). Trova (2nd ed.). Trova Foundation.

Dyfyniad Arddull Chicago

Kagan, Andrew. Trova. 2nd ed. St. Louis, Mo: Trova Foundation, 1987.

Dyfyniad MLA

Kagan, Andrew. Trova. 2nd ed. Trova Foundation, 1987.

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