Dyfyniad APA

Margetts, B. M., & Nelson, M. (1997). Design concepts in nutritional epidemiology (2nd ed.). Oxford University Press.

Dyfyniad Arddull Chicago

Margetts, Barrie M., and Michael Nelson. Design Concepts in Nutritional Epidemiology. 2nd ed. Oxford, Eng.: Oxford University Press, 1997.

Dyfyniad MLA

Margetts, Barrie M., and Michael Nelson. Design Concepts in Nutritional Epidemiology. 2nd ed. Oxford University Press, 1997.

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