APA (7th ed.) Citation

Baum, L. F., Hamilton, L., & Hess, P. (2010). The wizard of Oz. Silver Dolphin Books.

Chicago Style (17th ed.) Citation

Baum, L. Frank, Libby Hamilton, and Paul Hess. The Wizard of Oz. California: Silver Dolphin Books, 2010.

MLA (9th ed.) Citation

Baum, L. Frank, et al. The Wizard of Oz. Silver Dolphin Books, 2010.