Style de citation APA

Butler, G. D. (1960). Playgrounds: Their Administration and Operation. New York: Ronald Press Co..

Style de citation Chicago

Butler, George D. Playgrounds: Their Administration and Operation. New York: Ronald Press Co., 1960.

Style de citation MLA

Butler, George D. Playgrounds: Their Administration and Operation. New York: Ronald Press Co., 1960.

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