1. Ajzen, I. (1988). Attitudes, personality, and behavior. Chicago: Dorsey.
2. Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes,50, 179–211.
3. Ajzen, I., & Fishbein, M. (1980). Understanding attitudes and predicting social behavior. Englewood Cliffs, NJ: Prentice-Hall.
4. Ajzen, I., & Fishbein, M. (2005). The influence of attitudes on behavior. In D. Albarracin, B. T. Johnson, & M. P. Zanna (Eds.), The handbook of attitudes (pp. 173–221). Mahwah, NJ: Erlbaum.
5. Alt, D. (2014). The construction and validation of a new scale for measuring features of constructivist learning environments in higher education. Frontline Learning Research.
https://doi.org/10.14786/flr.v2i2.68
.