ebrary, Inc, Slade, A., & Wolf, D. (1999). Children at play: Clinical and developmental approaches to meaning and representation. Oxford University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, Arietta Slade, و Dennie Wolf. Children at Play: Clinical and Developmental Approaches to Meaning and Representation. New York: Oxford University Press, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, et al. Children at Play: Clinical and Developmental Approaches to Meaning and Representation. Oxford University Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.