APA (7th ed.) Citation

Haas, A., Haas, K., & Haas, K. U. s. (1990). Understanding sexuality (2d ed.). Times/mosby.

Chicago Style (17th ed.) Citation

Haas, Adelaide, Kurt Haas, and Kurt. Understanding sexualty Haas. Understanding Sexuality. 2d ed. St. Louis: Times/mosby, 1990.

MLA (9th ed.) Citation

Haas, Adelaide, et al. Understanding Sexuality. 2d ed. Times/mosby, 1990.