Blustein, D, L / 1991 / Contributions of psychological separation and parental attachment to the career development process / Journal of counselling psychology 38 (1) : 39 ~ Brooks-Gunn, J / 1997 / The effects of poverty on children / The future of children 7 (2) : 54 ~ 71 Creed, P. A. / 2004 / Internal and external barriers, cognitive style, and the career development variables of focus and indecision / Journal of career development 30 (4) : Dillard,J.M / 1976 / Relationship between career maturity and self-concepts of suburban and urban middle and suburban lower-class preadolescent black males / Journal of voca Holanhan, C. J. / 1995 / Parental support, coping strategies, and psychological adjustment: An integrative model with late adolescents / Journal of youth and adolescence 24