APA引文

Ley, W. (1969). Events in space. New York: David McKay Company.

Trích dẫn kiểu Chicago

Ley, Willy. Events in Space. New York: David McKay Company, 1969.

MLA引文

Ley, Willy. Events in Space. New York: David McKay Company, 1969.

警告：这些引文格式不一定是100％准确.