APA (7th ed.) Citation

Thompson, R. P., Baum, L. F., & Neill, J. R. (1932). The Purple Prince of Oz. Reilly & Lee.

Chicago Style (17th ed.) Citation

Thompson, Ruth Plumly, L. Frank Baum, and John R. Neill. The Purple Prince of Oz. Chicago: Reilly & Lee, 1932.

MLA (9th ed.) Citation

Thompson, Ruth Plumly, et al. The Purple Prince of Oz. Reilly & Lee, 1932.