Reed, P., & Waddington, E. M. (2009). The impact of using the “Preschool Inventory of Repertoires for Kindergarten” (PIRK®) on school outcomes of children with Autistic Spectrum Disorders. Research in Autism Spectrum Disorders, 3(3), pp. 809-827. doi:10.1016/j.rasd.2009.03.002

Reed, Phil, and Emma M. Waddington. "The Impact of Using the “Preschool Inventory of Repertoires for Kindergarten” (PIRK®) On School Outcomes of Children With Autistic Spectrum Disorders." Research in Autism Spectrum Disorders 3, no. 3 (2009): 809-827.

Reed, Phil, and Emma M. Waddington. "The Impact of Using the “Preschool Inventory of Repertoires for Kindergarten” (PIRK®) On School Outcomes of Children With Autistic Spectrum Disorders." Research in Autism Spectrum Disorders 3.3 (2009): 809-827.