Reddy, L. A., Files-Hall, T. M., & Schaefer, C. E. (2005). Empirically based play interventions for children. Washington, DC : American Psychological Association.
Lua i Stíl Chicago (17ú heag.)Reddy, Linda A., Tara M. Files-Hall, agus Charles E. Schaefer. Empirically Based Play Interventions for Children. Washington, DC : American Psychological Association, 2005.
Lua MLA (9ú heag.)Reddy, Linda A., et al. Empirically Based Play Interventions for Children. Washington, DC : American Psychological Association, 2005.
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