Brockett, R. G., & Hiemstra, R. (1991). Self-direction in adult learning: Perspectives on theory, research, and practice. London: Routledge.
Eckert, M., Ebert, D. D., Lehr, D., Sieland, B., & Berking, M. (2016). Overcoming procrastination in e-learning: An intervention study. Journal of Internet and Computer Applications, 35(5), 1086-1094.
Garrison, D. R. (1997). Self-directed learning: Toward a comprehensive model. Adult Education Quarterly, 48(1), 18-33.
Grunschel, C., Patrzek, J., & Fries, S. (2013). Exploring reasons and consequences of academic procrastination: An interview study. European Journal of Psychology of Education, 28(3), 841-861.
Klassen, R. M., Krawchuk, L. L., & Rajani, S. (2008). Academic procrastination of undergraduates: Low self-efficacy to self-regulate predicts higher levels of procrastination. Contemporary Educational Psychology, 33(4), 915-931.
Knowles, M. S. (1975). Self-directed learning: A guide for learners and teachers. New York: Association Press.
ahin, E., & Erden, M. (2009). Self-regulated learning: Skills and self-efficacy perceptions in relation with academic success of tertiary students. Eurasian Journal of Educational Research, 9(36), 155-172.
Steel, P. (2007). The nature of procrastination: A meta-analytic and theoretical review of quintessential self-regulatory failure. Psychological Bulletin, 133(1), 65-94.
Tuckman, B. W. (1991). The development and concurrent validity of the procrastination scale. Educational and Psychological Measurement, 51(2), 473-480.
Bembenutty, H., & Karabenick, S. A. (2004). Inherent association between academic delay of gratification, future time perspective, and self-regulated learning. Educational Psychology Review, 16(1), 35-57.
Howell, A. J., & Watson, D. C. (2007). Procrastination: Associations with achievement goal orientation and learning strategies. Personality and Individual Differences, 43(1), 167-178
