Brandt, R. (1995). Punished by rewards? A conversation with Alfie Kohn. Educational Leadership, 53(1), 13-16.
Retrieved from http://www.alfiekohn.org/teaching/pbracwak.htm.
Brandt, Ron. Retrieved from https://www.journals.uchicago.edu/doi/10.1086/501484
Deci, E. L., Koestner, R., & Ryan, R. M. (2001). Extrinsic Rewards and Intrinsic Motivation in Education:
Reconsidered Once Again. Review of Education Research, 71(1), 1-27. Retrieved from https://learningandexperienceblog.files.wordpress.com/2018/08/deci_koestner_ryan01.pdf
Ryan, R. M., & Deci, E. L. (2000). Intrinsic and extrinsic motivations: Classic definitions and new
directions. Contemporary Educational Psychology, 25, 54-67. Retrieved from https://learningandexperienceblog.files.wordpress.com/2018/08/ryan_deci00.pdf
Ryan, Richard M., Intrinsic and Extrinsic Motivations: Classic Definitions and New Directions, Retrieved from
https://learningandexperienceblog.files.wordpress.com/2018/08/ryan_deci00.pdf