Kim, S.W &sedlace, K.W.(1990).Gender differences among incoming African freshman an academic and social expectaion'', paper presented at the annual meeting of the American educational research association'' san Francisco.
Taylord, R.D & et. Al(1993) ''influence of Kinship social support on the parenting experiences and psychological adjustment of African-American adolescents'' developmental psychology, vol.29.p.382-388.
Varni, J .W & e al (1989) .social support and self - esteem on psychological adjustment in children and adolescents, with insulin dependant diabetes Mellitus, child and Family behavior therapy, vol.11.p. 1-17.
Woo, T &J. Bilynsky (1994). Involvement in extracurricular activities and adjustment to collage , unpublished doctoral thesis, Graduate school of education of Harvard university