1. Argyle, M., & Lu, L. (1990). Happiness and social skills. Personality and Individual Differences, 11, 1255–1262. https://doi.org/10.1016/0191-8869(90)90152-H
2. Barrick, M. R., Mount, M. K., & Judge, T. A. (2001). Personality and performance at the beginning of the new millennium: What do we know and where do we go next? International Journal of Selection and Assessment, 9, 9–30. https://doi.org/10.1111/1468-2389.00160
3. Butcher, J. N., Dahlstrom, W. G., Graham, J. R., Tellegen, A., & Kaemmer, B. (1989). Minnesota Multiphasic Personality Inventory – 2 (MMPI-2): Manual of administration and scoring. University of Minnesota Press.
4. Cattell, R. B., Cattell, A. K., & Cattell, H. E. (1993). Sixteen Personality Factor questionnaire, fifth edition. Institute for Personality and Ability Testing.
5. Cerasa, A., Lombardo, G., Tripodi, D., Stillitano, E., Sarica, A., Gramigna, V., Martino, I., Pullera, A., Tigani, S., De Carlo, Y., Idone, M., Scaglione, A., Ziarelli, E., Vasta, R., Donzuso, G., Rizzo, M., & Zucaro, D. L. (2016). Five-factor personality traits in priests. Personality and Individual Differences, 95, 89–94. https://doi.org/10.1016/j.paid.2016.02.040