APA引文

Dupree, W. G. (1972). United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior.

Trích dẫn kiểu Chicago

Dupree, Walter G. United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior, 1972.

MLA引文

Dupree, Walter G. United States Energy Through the Year 2000. Washington: U.S. Department of teh Interior, 1972.

警告：這些引文格式不一定是100％准確.