1. Present day trends in cerebral palsy;Abbott;American Journal of Occupational Therapy,1950
2. Play—A child's world;Alessandrini;American Journal of Occupational Therapy,1949
3. American Association for the Child's Right to Play (IPA/USA). (2007). The case for elementary school recess. Retrieved July 31, 2007 from http://www.ipausa.org/recesshandbook.htm.
4. Uniform terminology for occupational therapy: Third edition;American Occupational Therapy Association;American Journal of Occupational Therapy,1994
5. Occupational therapy practice framework: Domain and process;American Occupational Therapy Association;American Journal of Occupational Therapy,2002