1. Ackerman, C. E. (2020, December 21). What is Self-Efficacy Theory in Psychology? (+PDF). Retrieved January 11, 2021, from https://positivepsychology.com/self-efficacy/
2. Amalia, N. R., & Muhari. (2013). Adversity relationship Quotient with Career Maturity on Students at Mandiri Entrepreneur Center (MEC) Surabaya. Character 2(1).
3. Ashley, G. C., & Reiter-Palmon, R. (2012). Self-awareness and the evolution of leaders: The need for a better measure of self-awareness. Journal of Behavioral and Applied Management, 14(1), 2–17. https://doi.org/10.21818/001c.17902
4. Cherry, K. (2019, April 22). What Is Self-Concept? Retrieved November 19, 2019, from https://www.verywellmind.com/what-is-self-concept-2795865
5. Chikish, Y., Carreras, M., and Garci, J. (2019). eSports: A New Era for the Sports Industry and a New Impulse for the Research in Sports (and) Economics? Sports (and) Economics. FUNCAS (Spanish Savings Banks Foundation). 10.1.1.84.82&rep=rep1&type=pdf.