APA (7th ed.) Citation

Berg, C., & Allen, C. (1958). The problem of homosexuality. Citadel Press.

Chicago Style (17th ed.) Citation

Berg, Charles, and Clifford Allen. The Problem of Homosexuality. New York: Citadel Press, 1958.

MLA (9th ed.) Citation

Berg, Charles, and Clifford Allen. The Problem of Homosexuality. Citadel Press, 1958.