Fox, BS, Nicole Christine, and David P. Loy, PhD, CTRS/LRT. “Observational Play Assessment in Recreational Therapy (OPART): A Case Study for the Validation of Assessments in Recreational Therapy”. American Journal of Recreation Therapy 18, no. 1 (January 1, 2019): 39–45. Accessed April 27, 2024. https://wmpllc.org/ojs/index.php/ajrt/article/view/2410.