1. Aiken, L. S., West, S. G., & Reno, R. R. (1991). Multiple regression: Testing and interpreting interactions. Sage.
2. Ainslie, G. (2010). Picoeconomics: The strategic interaction of successive motivational states within the person (1 paperback ed., paperback re-issue). Studies in rationality and social change. Cambridge University Press.
3. Amabile, T. M., DeJong, W., & Lepper, M. R. (1976). Effects of externally imposed deadlines on subsequent intrinsic motivation. Journal of Personality and Social Psychology, 34(1), 92.
4. Ariely, D., & Wertenbroch, K. (2002). Procrastination, deadlines, and performance: Self-control by precommitment. Psychological Science, 13(3), 219–224. https://doi.org/10.1111/1467-9280.00441
5. Atkinson, J. W. (1974). Motivational determinants of intellective performance and cumulative achievement. In Motivation and achievement (pp. 389–410). V. W. Winston and Sons.