Sisson, Lee Hansen; Mayfield, Shirley A.; Entz, Susan (1985-03-01). "Reaching Students Through Computers: A New Therapy for Learning and Playing". Journal of Reading, Writing, and Learning Disabilities International. 1 (3): 61–83. doi:10.1080/0748763850010311. ISSN0748-7630.
Sisson, Lee Hansen; Mayfield, Shirley A.; Entz, Susan (1985-03-01). "Reaching Students Through Computers: A New Therapy for Learning and Playing". Journal of Reading, Writing, and Learning Disabilities International. 1 (3): 61–83. doi:10.1080/0748763850010311. ISSN0748-7630.