Cita APA (7th ed.)

MacMahon, B., & Pugh, T. F. (1970). Epidemiology; principles and methods. Little.

Cita Chicago (17th ed.)

MacMahon, Brian, i Thomas F. Pugh. Epidemiology; Principles and Methods. Boston: Little, 1970.

Cita MLA (9th ed.)

MacMahon, Brian, i Thomas F. Pugh. Epidemiology; Principles and Methods. Little, 1970.