APA (7th ed.) Citation

Leeson, R., & Scheffler, A. Why is the Cow on the Roof?

Chicago Style (17th ed.) Citation

Leeson, Robert, and Axel Scheffler. Why Is the Cow on the Roof?

MLA (9th ed.) Citation

Leeson, Robert, and Axel Scheffler. Why Is the Cow on the Roof?

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