National Research Council (U.S.). Division of Behavioral and Social Sciences and Education & ebrary, Inc. (2001). Early childhood development and learning: New knowledge for policy. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Division of Behavioral and Social Sciences and Education و Inc ebrary. Early Childhood Development and Learning: New Knowledge for Policy. Washington, DC: National Academy Press, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Division of Behavioral and Social Sciences and Education و Inc ebrary. Early Childhood Development and Learning: New Knowledge for Policy. National Academy Press, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.