APA Zitierstil

(1991). The Facts on File encyclopedia of the 20th century. New York: Facts on File.

Chicago Zitierstil

The Facts On File Encyclopedia of the 20th Century. New York: Facts on File, 1991.

MLA Zitierstil

The Facts On File Encyclopedia of the 20th Century. New York: Facts on File, 1991.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.