Butler, G. D. (1936). Playgrounds, their administration and operation: National recreation association. A.S. Barnes.
Style de citation Chicago (17e éd.)Butler, George D. Playgrounds, Their Administration and Operation: National Recreation Association. New York: A.S. Barnes, 1936.
Style de citation MLA (8e éd.)Butler, George D. Playgrounds, Their Administration and Operation: National Recreation Association. A.S. Barnes, 1936.
Attention : ces citations peuvent ne pas être correctes à 100%.