FAO. (1994). FAO fertilizer yearbook; N.44/1994. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Fertilizer Yearbook; N.44/1994. Rome: FAO, 1994.
MLA引文FAO. FAO Fertilizer Yearbook; N.44/1994. Rome: FAO, 1994.
警告：這些引文格式不一定是100％准確.
APA引文