Ruff, H. A., & Rothbart, M. K. (1996). Attention in early development: Themes and variations. New York: Oxford University Press.
استشهاد بنمط شيكاغوRuff, Holly Alliger., و Mary Klevjord Rothbart. Attention in Early Development: Themes and Variations. New York: Oxford University Press, 1996.
MLA استشهادRuff, Holly Alliger., و Mary Klevjord Rothbart. Attention in Early Development: Themes and Variations. New York: Oxford University Press, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.