(2011). The Philippines recommends for duck egg production. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.
Čikaški stil citiranja (17. izdanje)The Philippines Recommends for Duck Egg Production. Los Baños, Laguna: Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 2011.
MLA način citiranja (9. izdanje)The Philippines Recommends for Duck Egg Production. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 2011.
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