APA引文

United States Department of Agriculture. (1981). Will there be enough food. Washington, D.C: The Department.

Trích dẫn kiểu Chicago

United States Department of Agriculture. Will There Be Enough Food. Washington, D.C: The Department, 1981.

MLA引文

United States Department of Agriculture. Will There Be Enough Food. Washington, D.C: The Department, 1981.

警告：這些引文格式不一定是100％准確.