Cita APA (7a ed.)

Edwards, P. D., & Cole, H. (2000). Roar: A noisy counting book. HarperCollins.

Cita Chicago Style (17a ed.)

Edwards, Pamela Duncan, y Henry Cole. Roar: A Noisy Counting Book. New York: HarperCollins, 2000.

Cita MLA (8a ed.)

Edwards, Pamela Duncan, y Henry Cole. Roar: A Noisy Counting Book. HarperCollins, 2000.