Witamina D: Różnice pomiędzy wersjami

* <ref name="pmid9269215-s1801-1804">{{cytuj pismo | nazwisko = Muhe L, Lulseged S, Mason KE, Simoes EA | tytuł = Case-control study of the role of nutritional rickets in the risk of developing pneumonia in Ethiopian children. | czasopismo = Lancet | wolumin = 349 | numer = 9068 | strony = 1801-1804 | rok = 1997 | doi = 10.1016/S0140-6736(96)12098-5 | pmid = 9269215}}</ref>

* <ref name="sheet">[http://ods.od.nih.gov/factsheets/vitamind.asp Dietary Supplement Fact Sheet: Vitamin D]</ref>

* <ref name="Vitamins what they do and">{{cytuj stronę | url = http://www.eufic.org/article/en/expid/miniguide-vitamins/#11 | tytuł = Vitamins: what they do and where to find them (EUFIC) | data dostępu = 2010-12-11 | data = 10-12-2010 | praca = European Food Information Council | cytat = Vitamin D}}</ref>

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