1. Abrams, D., & Hogg, M. A. (1990). An Introduction to the social identity approach. In. D. Abrams & M. Hogg (Eds.), Social identity theory constructive and critical advances (pp. 1–10). Springer-Verlag Publishing.
2. Football refereeing: An integrative review;Aragão e Pina;Psychology of Sport and Exercise,2018
3. Armenteros, M., Benitez, A. J., & Betancor, M. Á. (2019). The use of video technologies in refereeing football and other sports. New York: Routledge.
4. BBC Sport (2017, March 3). Video referees: FA wants to use technology in next season’s FA Cup. https://www.bbc.com/sport/football/39157887.
5. BBC Sport (2019, November 15). VAR controversy: Premier League executive says law change may be needed. https://www.bbc.com/sport/football/50432628.