Sommer, A., & West, K. P. (1996). Vitamin A deficiency: Health, survival, and vision. Oxford University Press.
Čikaški stil citiranja (17. izdanje)Sommer, Alfred, i Keith P. West. Vitamin A Deficiency: Health, Survival, and Vision. New York: Oxford University Press, 1996.
MLA način citiranja (9. izdanje)Sommer, Alfred, i Keith P. West. Vitamin A Deficiency: Health, Survival, and Vision. Oxford University Press, 1996.
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