Dyfyniad APA

Hickman, C. P. (1978). Biology of animals (2nd ed.). The C.V. Mosby.

Dyfyniad Arddull Chicago

Hickman, Cleveland P. Biology of Animals. 2nd ed. Saint Louis, Missouri: The C.V. Mosby, 1978.

Dyfyniad MLA

Hickman, Cleveland P. Biology of Animals. 2nd ed. The C.V. Mosby, 1978.

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