APA (7e ed.) Bronvermelding

Sommer, A. (1996). Vitamin A deficiency: Health, survival, and vision. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Sommer, Alfred. Vitamin A Deficiency: Health, Survival, and Vision. New York: Oxford University Press, 1996.

MLA (8e ed.) Bronvermelding

Sommer, Alfred. Vitamin A Deficiency: Health, Survival, and Vision. Oxford University Press, 1996.