Cita APA

(1972). The world almanac and book of facts 1972. New York, N. Y.: Newspaper Enterprise Association.

Citación estilo Chicago

The World Almanac and Book of Facts 1972. New York, N. Y.: Newspaper Enterprise Association, 1972.

Cita MLA

The World Almanac and Book of Facts 1972. New York, N. Y.: Newspaper Enterprise Association, 1972.