APA引文

FAO. (1989). FAO economic and social development paper N.81: Temporal and spatial agricultural development in the Sudan. Rome: FAO.

Trích dẫn kiểu Chicago

FAO. FAO Economic and Social Development Paper N.81: Temporal and Spatial Agricultural Development in the Sudan. Rome: FAO, 1989.

MLA引文

FAO. FAO Economic and Social Development Paper N.81: Temporal and Spatial Agricultural Development in the Sudan. Rome: FAO, 1989.

警告：這些引文格式不一定是100％准確.