Ohio. Division of Mental Retardation and Developmental Disabilities. Office of Habilitation Services. (1977). State of Ohio curriculum guide for moderately mentally retarded learners. The Dept..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ohio. Division of Mental Retardation and Developmental Disabilities. Office of Habilitation Services. State of Ohio Curriculum Guide for Moderately Mentally Retarded Learners. Columbus: The Dept., 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ohio. Division of Mental Retardation and Developmental Disabilities. Office of Habilitation Services. State of Ohio Curriculum Guide for Moderately Mentally Retarded Learners. The Dept., 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.