TurnbullH. R.III, & TurnbullA. P. (1985). Parents speak out: Then and now. Columbus, OH: Merrill Publishing Company.
2.
TurnbullA. P.TurnbullH. R.III, & SummersJ. A., with BehrS. K.ShafferH.GreenJ., & GroskoJ. (1986). Instructor's manual for Families, Professionals, and Exceptionality: A special partnership. Columbus, OH: Merrill Publishing Company.