APA引文

Robert J Ames. (1967). Visuals in agricultural extension programs. Washington: International Cooperation Administration.

Trích dẫn kiểu Chicago

Robert J Ames. Visuals in Agricultural Extension Programs. Washington: International Cooperation Administration, 1967.

MLA引文

Robert J Ames. Visuals in Agricultural Extension Programs. Washington: International Cooperation Administration, 1967.

警告：這些引文格式不一定是100％准確.