APA-referens (7:e uppl.)

Mitchell, E. D., Mason, B. S., & Bowen, W. P. 1. . T. t. o. o. p. (1934). The theory of play. A.S. Barnes and company, incorporated.

Chicago-referens (17:e uppl.)

Mitchell, Elmer Dayton, Bernard Sterling Mason, och Wilbur Pardon 1864-1928. The theory of organized play Bowen. The Theory of Play. New York: A.S. Barnes and company, incorporated, 1934.

MLA-referens (9:e uppl.)

Mitchell, Elmer Dayton, et al. The Theory of Play. A.S. Barnes and company, incorporated, 1934.