Referencer og forslag til yderligere læsning


Mild B12 Deficiency

Vitamin B12: Are You Getting It?

What Every Vegan Should Know about Vitamin B12 (søg på vitamin B12)

What is the Role of Supplements in a Healthy Diet?

Vitamin B12 (Cobalamin)

Vitamin B12 mangel

Journal of the Academy of Nutrition and Dietetics.
Position of the American Dietetic Association: Vegetarian Diets
July 2009 Volume 109, Issue 7, Pages 1266–1282