APA (7th ed.) Citation

Gregersen, E. (1983). Sexual practices: The story of human sexuality. F. Watts.

Chicago Style (17th ed.) Citation

Gregersen, Edgar. Sexual Practices: The Story of Human Sexuality. New York: F. Watts, 1983.

MLA (9th ed.) Citation

Gregersen, Edgar. Sexual Practices: The Story of Human Sexuality. F. Watts, 1983.