1. Alivandi-Vafa, M., & Khaidzir, H. I. (2008). Current approaches to preschoolers’ problem behaviors: issues to ponder over. Paper presented at the 2nd Convention of Asian Psychological Association, Kuala Lumpur, Malaysia.
2. Aunola, K. & Nurmi, J. E. (2005). The role of parenting styles in children's problem behavior. Child Development, 76(6), 1144-1159.
3. Axline, V. M. (1947). Play therapy (Rev. ed.) New York: Ballantine Books.
4. Barlow, J., Parsons, J., & Stewart-Brown, S. (2005). Preventive emotional and behavioral problems: The effectiveness of parenting programs with children less than 3 years of age. Child: Care, Health & Development, 31(1), 33-42.
5. Benham, A. L., & Slotnick, C. F. (2006). Play therapy: Integrating clinical and developmental perspectives. In J. L. Luby (Ed.), Handbook of preschool mental health: Development, disorders, and treatment (pp. 331-371). New York: Guilford Press.