Sheridan, M. D., Meldon-Smith, L., & Harding, J. (1999). Play in early childhood: From birth to six years (2rd ed., rev. and updated.). Australian: Acer Press.
استشهاد بنمط شيكاغوSheridan, Mary D., Liz Meldon-Smith, و Jackie Harding. Play in Early Childhood: From Birth to Six Years. 2rd ed., rev. and updated. Australian: Acer Press, 1999.
MLA استشهادSheridan, Mary D., Liz Meldon-Smith, و Jackie Harding. Play in Early Childhood: From Birth to Six Years. 2rd ed., rev. and updated. Australian: Acer Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.