Dyfyniad APA

Willett, W. (1998). Nutritional epidemiology (2nd ed.). Oxford University Press.

Dyfyniad Arddull Chicago

Willett, Walter. Nutritional Epidemiology. 2nd ed. New York: Oxford University Press, 1998.

Dyfyniad MLA

Willett, Walter. Nutritional Epidemiology. 2nd ed. Oxford University Press, 1998.

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