Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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