8wentxel, K. R. (1997) Student Motivation in Middle School: The Role of Perceived Pedagogical Caring, Journal of Educational Psychology, Vol. 89. No. 3.411-419.
9Smith, Heather M.; Betz, Nancy E. Development and validation of a Scale of Perceived social self-efficacy,Journal of Career Assessment, Vol 8(3), Sum 2000. pp. 283-301.
10Connolly, Jennifer, social self-efficacy in adolescence: Relations with self-concept, social adjustment, and mental health Canadian Journal of Behavioural Science, Vol 21 (3), Jul 1989 pp. 258-269.