APA (7th ed.) Citation

Butler, G. D. (1936). Playgrounds, their administration and operation: National recreation association. A.S. Barnes.

Chicago Style (17th ed.) Citation

Butler, George D. Playgrounds, Their Administration and Operation: National Recreation Association. New York: A.S. Barnes, 1936.

MLA (8th ed.) Citation

Butler, George D. Playgrounds, Their Administration and Operation: National Recreation Association. A.S. Barnes, 1936.