APA (7th ed.) Citation

Ellis, A., Harper, R. A., & Powers, M. (1979). A guide to successful marriage (1979 ed.). Melvin Powers.

Chicago Style (17th ed.) Citation

Ellis, Albert, Robert A. Harper, and Melvin Powers. A Guide to Successful Marriage. 1979 ed. California: Melvin Powers, 1979.

MLA (9th ed.) Citation

Ellis, Albert, et al. A Guide to Successful Marriage. 1979 ed. Melvin Powers, 1979.