Dyfyniad APA

Royston, A., King, D., Cradock-Watson, J., & Hopkins, D. (1992). Birds. Aladdin Books.

Dyfyniad Arddull Chicago

Royston, Angela, Dave King, Jane Cradock-Watson, and Dave Hopkins. Birds. New York: Aladdin Books, 1992.

Dyfyniad MLA

Royston, Angela, et al. Birds. Aladdin Books, 1992.

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