Clark, D. W. (1981). Preventive and community medicine (2ª ed.). Little, Brown.
Citación estilo ChicagoClark, Duncan W. Preventive and Community Medicine. 2ª ed. Little, Brown, 1981.
Cita MLAClark, Duncan W. Preventive and Community Medicine. 2ª ed. Little, Brown, 1981.
Warning: These citations may not always be 100% accurate.