1. Allen, S. ‘Upon Further Review: A Brief History of Instant Replay’, Mental Floss, October 13, 2010. https://www.mentalfloss.com/article/26075/upon-further-review-brief-history-instant-replay (accessed October 30, 2020).
2. Ames, N. ‘‘It’s a Nonsense’: Newcastle’s Steve Bruce Hits Out at Handball Rule’. The Guardian, September 27, 2020. https://www.theguardian.com/football/2020/sep/27/its-a-nonsense-newcastles-steve-bruce-hits-out-at-handball-rule (accessed October 30, 2020)
3. Call ‘Em as they are: What’s Wrong with Blown Calls and What to do about them
4. Brand, G. ‘Referee Myth-busting: How Many Decisions Do Officials Get Right?’ Sky Sports, March 16, 2018. https://www.skysports.com/football/news/11096/10808860/referee-myth-busting-how-many-decisions-do-officials-get-right (accessed October 30, 2020).