Butler, G. D. (1950). Playgrounds, their administration and operation (Revised edition.). Ronald Press.
Chicago Style (17th ed.) CitationButler, George D. Playgrounds, Their Administration and Operation. Revised edition. New York: Ronald Press, 1950.
MLA (9th ed.) CitationButler, George D. Playgrounds, Their Administration and Operation. Revised edition. Ronald Press, 1950.
Warning: These citations may not always be 100% accurate.