Will, R. F. (1964). State education: Structure and organization, with particular emphasis upon public education at the elementary and secondary levels. U.S. Dept. of Health, Education and Welfare, Office of Education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Will, Robert Frederick. State Education: Structure and Organization, with Particular Emphasis upon Public Education at the Elementary and Secondary Levels. [Washington, D.C.]: U.S. Dept. of Health, Education and Welfare, Office of Education, 1964.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Will, Robert Frederick. State Education: Structure and Organization, with Particular Emphasis upon Public Education at the Elementary and Secondary Levels. U.S. Dept. of Health, Education and Welfare, Office of Education, 1964.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.