Dyfyniad APA

Jekel, J. F., Katz, D. L., MD, & Elmore, J. G. (2001). Epidemiology, biostatistics, and preventive medicine (2nd ed.). W.B. Saunders.

Dyfyniad Arddull Chicago

Jekel, James F., David L. Katz, MD, and Joann G. Elmore. Epidemiology, Biostatistics, and Preventive Medicine. 2nd ed. Philadelphia: W.B. Saunders, 2001.

Dyfyniad MLA

Jekel, James F., et al. Epidemiology, Biostatistics, and Preventive Medicine. 2nd ed. W.B. Saunders, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.