APA (7th ed.) Citation

Vernon, A., Rayevsky, R., & Radunsky, V. (1987). The riddle. Dodd, Mead.

Chicago Style (17th ed.) Citation

Vernon, Adele, Robert Rayevsky, and Vladimir Radunsky. The Riddle. New York: Dodd, Mead, 1987.

MLA (9th ed.) Citation

Vernon, Adele, et al. The Riddle. Dodd, Mead, 1987.