APA (7th ed.) Citation

Sapora, A. V. H., & Mitchell, E. D. (1961). The theory of play and recreation (3d ed.). Ronald Press Co..

Chicago Style (17th ed.) Citation

Sapora, Allen Victor Heimbach, and Elmer Dayton Mitchell. The Theory of Play and Recreation. 3d ed. New York: Ronald Press Co., 1961.

MLA (9th ed.) Citation

Sapora, Allen Victor Heimbach, and Elmer Dayton Mitchell. The Theory of Play and Recreation. 3d ed. Ronald Press Co., 1961.