1. Aspinwall, L. G., & Taylor, S. E. (1992). Modeling cognitive adaptation: A longitudinal investigation of the impact of individual differences and coping on college adjustment and performance. Journal of Personality and Social Psychology, 63(6), 989–1003.
2. Aydın, G., & Tezer, E. (1991). The relationship between optimism, health problems and academic success [İyimserlik, sağlık sorunları ve akademik başarı ilişkisi]. Psikoloji Dergisi, 7, 2–9.
3. Bastianello, M. R., Pacico, J. C., & Hutz, C. S. (2014). Optimism, self-esteem and personality: Adaptation and validation of the Brazilian version of the revised life orientation test (LOT-R). Psico-USF, 19(3), 523–531.
4. Brown, J. D., & Marshall, M. A. (2006). The three faces of self-esteem. In M. H. Kernis (Ed.), Self-esteem Issues and answers: A sourcebook of current perspectives (pp. 4–9). New York: Psychology Press.
5. Caprara, G. V., Fagnani, C., Alessandri, G., Steca, P., Gigantesco, A., Sforza, L. L. C., & Stazi, M. A. (2009). Human optimal functioning: The genetics of positive orientation towards self, life, and the future. Behavior Genetics, 39(3), 277–284.