United States. General Accounting Office. (1975). Project Head Start: Achievements and problems, Office of Human Development, Department of Health, Education, and Welfare : report to the Congress. U.S. General Accounting Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. General Accounting Office. Project Head Start: Achievements and Problems, Office of Human Development, Department of Health, Education, and Welfare : Report to the Congress. [Washington: U.S. General Accounting Office, 1975.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. General Accounting Office. Project Head Start: Achievements and Problems, Office of Human Development, Department of Health, Education, and Welfare : Report to the Congress. U.S. General Accounting Office, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.