Kleinbaum,David G. Kupper, L. L. M. (1982). Epidemiologic research: Pricnciples and quantitive methods. Van Nostrand Reinhold.
Dyfyniad Arddull ChicagoKleinbaum,David G. Kupper, Lawrence L. Morgenstern,Hal. Epidemiologic Research: Pricnciples and Quantitive Methods. New York: Van Nostrand Reinhold, 1982.
Dyfyniad MLAKleinbaum,David G. Kupper, Lawrence L. Morgenstern,Hal. Epidemiologic Research: Pricnciples and Quantitive Methods. Van Nostrand Reinhold, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.