Cita APA

Clark Duncan W., & MacMahon Brian. (1967). Preventive medicine (1a. ed.). Boston: Little, Brown.

Citación estilo Chicago

Clark Duncan W., y MacMahon Brian. Preventive Medicine. 1a. ed. Boston: Little, Brown, 1967.

Cita MLA

Clark Duncan W., y MacMahon Brian. Preventive Medicine. 1a. ed. Boston: Little, Brown, 1967.