APA (7th ed.) Citation

AA, M., & EL, P. (1953). Biological potency and its relation to therapeutic efficacy. Bulletin of the World Health Organization, 9(1), 1.

Chicago Style (17th ed.) Citation

AA, MILES, and PERRY EL. "Biological Potency and Its Relation to Therapeutic Efficacy." Bulletin of the World Health Organization 9, no. 1 (1953): 1.

MLA (9th ed.) Citation

AA, MILES, and PERRY EL. "Biological Potency and Its Relation to Therapeutic Efficacy." Bulletin of the World Health Organization, vol. 9, no. 1, 1953, p. 1.