WebMD. https://www.webmd.com/fitness-exercise/features/10-sports-injuries-you-can-prevent#1
Diakses pada Oktober 2018Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/achilles-tendinitis/symptoms-causes/syc-20369020
Diakses pada 4 Maret 2019Unity Point. https://www.unitypoint.org/livewell/article.aspx?id=591d8cf1-1ee5-4cb3-b662-a5f21f6f13bc
Diakses pada 4 Maret 2019