Style de citation APA

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

Style de citation Chicago

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

Style de citation MLA

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

Attention : ces citations peuvent ne pas être correctes à 100%.