Dyfyniad APA

Kirk, D. (1975). Biology today (2nd. ed.). C R M Random Publishers.

Dyfyniad Arddull Chicago

Kirk, David. Biology Today. 2nd. ed. New York: C R M Random Publishers, 1975.

Dyfyniad MLA

Kirk, David. Biology Today. 2nd. ed. C R M Random Publishers, 1975.

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