APA (7th ed.) Citation

Keane, D., & Campbell, K. G. (2016). Who wants a tortoise? (First edition.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Keane, David, and K. G. Campbell. Who Wants a Tortoise? First edition. New York: Alfred A. Knopf, 2016.

MLA (8th ed.) Citation

Keane, David, and K. G. Campbell. Who Wants a Tortoise? First edition. Alfred A. Knopf, 2016.

Warning: These citations may not always be 100% accurate.