Vitamina A (Romanian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Vitamina A" in Romanian language version.

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1oregonstate.edu

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1news-medical.net

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doi.org

Tanumihardjo SA (august 2011). „Vitamin A: biomarkers of nutrition for development”. The American Journal of Clinical Nutrition. 94 (2): 658S–65S. doi:10.3945/ajcn.110.005777. PMC 3142734 . PMID 21715511.
Wolf G (iunie 2001). „The discovery of the visual function of vitamin A”. The Journal of Nutrition. 131 (6): 1647–50. doi:10.1093/jn/131.6.1647 . PMID 11385047.

news-medical.net

News Medical. „What is Vitamin A?”. Accesat în 1 mai 2012.

nih.gov

ncbi.nlm.nih.gov

Tanumihardjo SA (august 2011). „Vitamin A: biomarkers of nutrition for development”. The American Journal of Clinical Nutrition. 94 (2): 658S–65S. doi:10.3945/ajcn.110.005777. PMC 3142734 . PMID 21715511.
Wolf G (iunie 2001). „The discovery of the visual function of vitamin A”. The Journal of Nutrition. 131 (6): 1647–50. doi:10.1093/jn/131.6.1647 . PMID 11385047.

nlm.nih.gov

„Vitamin A”. MedlinePlus, National Library of Medicine, US National Institutes of Health. 2 decembrie 2016.

ods.od.nih.gov

„Vitamin A”. Office of Dietary Supplements, US National Institutes of Health. 31 august 2016.

oregonstate.edu

lpi.oregonstate.edu

„Vitamin A”. Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis. ianuarie 2015. Accesat în 6 iulie 2017.