Farzadfard, S. . A. , , Abdekhodaee, M. S. , and Ghenaee Chaman Abadi, A. . "Effectiveness of combined purposeful play therapy and narrative therapy on pre-school childrens’ attention and concentration", Journal of Fundamentals of Mental Health, 17, 5, 2015, 222-228. doi: 10.22038/jfmh.2015.4777