National Society for the Study of Education. Committee on Early Childhood Education & Gordon, I. J. (1972). Early childhood education. NSSE; distributed by the University of Chicago Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Society for the Study of Education. Committee on Early Childhood Education و Ira J. Gordon. Early Childhood Education. Chicago: NSSE; distributed by the University of Chicago Press, 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Society for the Study of Education. Committee on Early Childhood Education و Ira J. Gordon. Early Childhood Education. NSSE; distributed by the University of Chicago Press, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.