APA引文

Whittlesey, D. (1939). The earth and the state. New York: Henry holt and company.

Trích dẫn kiểu Chicago

Whittlesey, Derwent. The Earth and the State. New York: Henry holt and company, 1939.

MLA引文

Whittlesey, Derwent. The Earth and the State. New York: Henry holt and company, 1939.

警告：这些引文格式不一定是100％准确.