Dyfyniad APA

Simpson, G. G. (1965). Life: An introduction to biology (2nd ed.). Harcourt, Brace and World.

Dyfyniad Arddull Chicago

Simpson, George Gaylord. Life: An Introduction to Biology. 2nd ed. New York: Harcourt, Brace and World, 1965.

Dyfyniad MLA

Simpson, George Gaylord. Life: An Introduction to Biology. 2nd ed. Harcourt, Brace and World, 1965.

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