Human Services Research Institute (Cambridge, Mass.), Pennsylvania Developmental Disabilities Planning Council, & Ellison, M. L. (1990). Recommendations for a family support agenda for children with disabilities in Pennsylvania. Human Services Research Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Human Services Research Institute (Cambridge, Mass.), Pennsylvania Developmental Disabilities Planning Council, و Marsha Langer Ellison. Recommendations for a Family Support Agenda for Children with Disabilities in Pennsylvania. Cambridge, Mass.: Human Services Research Institute, 1990.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Human Services Research Institute (Cambridge, Mass.), et al. Recommendations for a Family Support Agenda for Children with Disabilities in Pennsylvania. Human Services Research Institute, 1990.