Jekel, J. F. (2001). Epidemiology, biostatistics, and preventive medicine. Philadelphia: Saunders.
Trích dẫn kiểu ChicagoJekel, James F. Epidemiology, Biostatistics, and Preventive Medicine. Philadelphia: Saunders, 2001.
MLA引文Jekel, James F. Epidemiology, Biostatistics, and Preventive Medicine. Philadelphia: Saunders, 2001.
警告:這些引文格式不一定是100%准確.