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.
Atenció: Aquestes cites poden no estar 100% correctes.