Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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