FAO. (1990). Food aid in figures, 1990: Vol.8.1. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. Food Aid in Figures, 1990: Vol.8.1. Rome: FAO, 1990.
MLA引文FAO. Food Aid in Figures, 1990: Vol.8.1. Rome: FAO, 1990.
警告：这些引文格式不一定是100％准确.
APA引文