APA-viite

(1999). Double blind, cluster randomised trial of low dose supplementation with vitamin A or β carotene on mortality related to pregnancy in Nepal. British Medical Journal.

Chicago-tyylinen lähdeviittaus

Double Blind, Cluster Randomised Trial of Low Dose Supplementation With Vitamin A or β Carotene On Mortality Related to Pregnancy in Nepal. British Medical Journal, 1999.

MLA-viite

Double Blind, Cluster Randomised Trial of Low Dose Supplementation With Vitamin A or β Carotene On Mortality Related to Pregnancy in Nepal. British Medical Journal, 1999.

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