Não informado. Programs for the Handicapped. Office for the Handicapped, Department of Health, Education and Welfare.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Programs for the Handicapped. Washington: Office for the Handicapped, Department of Health, Education and Welfare.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Programs for the Handicapped. Office for the Handicapped, Department of Health, Education and Welfare.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.