APA引文

(1987). 1987 Census of agriculture. USA: U.S Department of Commerce.

Trích dẫn kiểu Chicago

1987 Census of Agriculture. USA: U.S Department of Commerce, 1987.

MLA引文

1987 Census of Agriculture. USA: U.S Department of Commerce, 1987.

警告：這些引文格式不一定是100％准確.