D Horton, C. A Berg, J Butner and D. J. Wiebe
Journal of Pediatric Psychology 34 ( 9 ): 1008 - 1018 , 2009
D. J Wiebe, A Croom, K. T Fortenberry, J Butner, J Butler, M. T Swinyard, R Lindsay, D Donaldson, C Foster, M Murray and C. A. Berg
Journal of Pediatric Psychology 35 ( 10 ): 1152 - 1160 , 2010