FAO & Zapata, F. (2004). FAO. Fertilizer and plant nutrition bulletin: 13, Use of phosphate rocks for sustainable agriculture.
Čikaški stil citiranja (17. izdanje)FAO i F. Zapata. FAO. Fertilizer and Plant Nutrition Bulletin: 13, Use of Phosphate Rocks for Sustainable Agriculture. 2004.
MLA način citiranja (9. izdanje)FAO i F. Zapata. FAO. Fertilizer and Plant Nutrition Bulletin: 13, Use of Phosphate Rocks for Sustainable Agriculture. 2004.
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