Friel, J. K. (2000). Folic acid supplementation: More work is needed. CMAJ.
Čikaški stil citiranjaFriel, James K. "Folic Acid Supplementation: More Work Is Needed." CMAJ 2000.
MLA način citiranjaFriel, James K. "Folic Acid Supplementation: More Work Is Needed." CMAJ 2000.
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