APA引文

William A. Geering. (2002). Preparation of rift valley fever contingency plans. Rome, Italy: FAO.

Trích dẫn kiểu Chicago

William A. Geering. Preparation of Rift Valley Fever Contingency Plans. Rome, Italy: FAO, 2002.

MLA引文

William A. Geering. Preparation of Rift Valley Fever Contingency Plans. Rome, Italy: FAO, 2002.

警告：这些引文格式不一定是100％准确.