APA (7th ed.) Citation

Dalton, K., & Holton, W. (1999). Once a month: Understanding and treating PMS (New fully rev. 6th ed.). Hunter House.

Chicago Style (17th ed.) Citation

Dalton, Katharina, and Wendy Holton. Once a Month: Understanding and Treating PMS. New fully rev. 6th ed. Alameda, CA: Hunter House, 1999.

MLA (9th ed.) Citation

Dalton, Katharina, and Wendy Holton. Once a Month: Understanding and Treating PMS. New fully rev. 6th ed. Hunter House, 1999.