Style de citation APA

Posnack, E. R. (1946). The 21st centrury looks back. New York: William-Frederick Press.

Style de citation Chicago

Posnack, Emanuel R. The 21st Centrury Looks Back. New York: William-Frederick Press, 1946.

Style de citation MLA

Posnack, Emanuel R. The 21st Centrury Looks Back. New York: William-Frederick Press, 1946.

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