APA (7th ed.) Citation

GA, M., & JJW, F. (2002). Nipple piercing and hyperprolactinemia. New England Journal of Medicine, 347(20), 1626.

Chicago Style (17th ed.) Citation

GA, Modest, and Fangman JJW. "Nipple Piercing and Hyperprolactinemia." New England Journal of Medicine 347, no. 20 (2002): 1626.

MLA (9th ed.) Citation

GA, Modest, and Fangman JJW. "Nipple Piercing and Hyperprolactinemia." New England Journal of Medicine, vol. 347, no. 20, 2002, p. 1626.