APA引文

Cowles, V. (1956). Winston Churchill: The era and the man. New York: The Universal Library.

Trích dẫn kiểu Chicago

Cowles, Virginia. Winston Churchill: The Era and the Man. New York: The Universal Library, 1956.

MLA引文

Cowles, Virginia. Winston Churchill: The Era and the Man. New York: The Universal Library, 1956.

警告：这些引文格式不一定是100％准确.