Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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