1. Armas, A. de & Kelly, J.A. (1989). Social relationships in adolescence: Skill development and training. In J. Worell & F. Danner (Eds.), The adolescent as decision–maker. Applications to development and education. (pp. 83–109). San Diego: Academic Press.
2. Arrindell, W.A., Groot, P.M. de & Walburg, J.A. (1984). De Schaal voor Interpersoonlijk Gedrag: SIG. Handleiding. Lisse: Swets & Zeitlinger.
3. Bandura, A. (1977). Social learning theory. Englewood Cliffs: Prentice Hall.
4. Bartels, A.J. (1986). Sociale–vaardigheidstraining voor probleem–jongeren. Lisse: Swets & Zeitlinger.
5. Bellack, A.S. (1979). Behavioral assessment of social skills. In A.S. Bellack & M. Hersen (Eds.), Research and practice in social skills training (pp. 75–104). New York: Plenum Press.