APA引文

(1993). The world almanac and book of facts 1993. New York: St. Martin's.

Trích dẫn kiểu Chicago

The World Almanac and Book of Facts 1993. New York: St. Martin's, 1993.

MLA引文

The World Almanac and Book of Facts 1993. New York: St. Martin's, 1993.

警告：这些引文格式不一定是100％准确.