APA引文

(1972). 1972 report: Grain legume improvement program. Nigeria: International Institute of Tropical Agriculture.

Trích dẫn kiểu Chicago

1972 Report: Grain Legume Improvement Program. Nigeria: International Institute of Tropical Agriculture, 1972.

MLA引文

1972 Report: Grain Legume Improvement Program. Nigeria: International Institute of Tropical Agriculture, 1972.

警告：这些引文格式不一定是100％准确.