APA-viite (7. p.)
Combs, G. F. (2012). The vitamins: Fundamental aspects in nutrition and health (4th ed.). Elsevier/Academic Press.
Chicago-viite (17. p.)
Combs, Gerald F. The Vitamins: Fundamental Aspects in Nutrition and Health. 4th ed. Amsterdam: Elsevier/Academic Press, 2012.
MLA-viite (9. p.)
Combs, Gerald F. The Vitamins: Fundamental Aspects in Nutrition and Health. 4th ed. Elsevier/Academic Press, 2012.
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