1. Arbuckle, J. L. (2010). IBM SPSS® Amos™ 19 User’s guide. Crawfordville (Fl): Amos Development Corporation.
2. Barrett, L. F., & Russell, J. A. (1998). Independence and bipolarity in the structure of current affect. Journal of Personality and Social Psychology, 74(4), 967–984.
3. Bradburn, N. M. (1969). The structure of psychological well-being. Chicago: Aldine.
4. Bradburn, N. M., & Caplovitz, D. (1965). Reports on happiness: A pilot study of behavior related to mental health. Chicago: Aldine.
5. Browne, M. W., & Cudeck, R. (1993). Alternative ways of assessing model fit. In K. A. Bollen & J. S. Long (Eds.), Testing structural equation models (pp. 136–162). Thousand Oaks: Sage.