Perfectionism—Psychology Today

Link: https://www.psychologytoday.com/us/basics/perfectionism

Perfectionism in Sport—IResearchNet

Link: http://psychology.iresearchnet.com/sports-psychology/sports-and-personality/perfectionism-in-sport/

The Downside of Perfectionism in Sports—Sports Psychology Today

Link: http://www.sportpsychologytoday.com/youth-sports-psychology/the-downside-of-perfectionism-in-sports/