Cita APA (7th ed.)

Willett, W. (1990). Nutritional epidemiology. Oxford University Press.

Cita Chicago (17th ed.)

Willett, Walter. Nutritional Epidemiology. New York: Oxford University Press, 1990.

Cita MLA (9th ed.)

Willett, Walter. Nutritional Epidemiology. Oxford University Press, 1990.

Atenció: Aquestes cites poden no estar 100% correctes.