APA引文

Copeland, M. T. (1917). The cotton manufacturing industry of the United States. Cambridge: Harvard university.

Trích dẫn kiểu Chicago

Copeland, Melvin Thomas. The Cotton Manufacturing Industry of the United States. Cambridge: Harvard university, 1917.

MLA引文

Copeland, Melvin Thomas. The Cotton Manufacturing Industry of the United States. Cambridge: Harvard university, 1917.

警告：这些引文格式不一定是100％准确.