Dyfyniad APA

Oram, R. F. (1989). Biology, living systems (6th ed., Teacher annotated ed.). Merrill Pub. Co..

Dyfyniad Arddull Chicago

Oram, Raymond F. Biology, Living Systems. 6th ed., Teacher annotated ed. Columbus, Ohio: Merrill Pub. Co., 1989.

Dyfyniad MLA

Oram, Raymond F. Biology, Living Systems. 6th ed., Teacher annotated ed. Merrill Pub. Co., 1989.

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