Jekel, J. F. (2001). Epidemiology, biostatistics, and preventive medicine. Philadelphia: Saunders.
Chicago Style aipamenaJekel, James F. Epidemiology, Biostatistics, and Preventive Medicine. Philadelphia: Saunders, 2001.
MLA aipamenaJekel, James F. Epidemiology, Biostatistics, and Preventive Medicine. Philadelphia: Saunders, 2001.
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