FAO. (2003). State of the world's forests 2003. Rome, Italy: FAO.
Trích dẫn kiểu ChicagoFAO. State of the World's Forests 2003. Rome, Italy: FAO, 2003.
MLA引文FAO. State of the World's Forests 2003. Rome, Italy: FAO, 2003.
警告：这些引文格式不一定是100％准确.
APA引文