Bibiliography

"American Horseshoe Pitchers Association (AHPA)" American Horseshoe Pitchers Association (AHPA) | Court & Field Dimension Diagrams in 3D, History, Rules – SportsKnowHow.com. Internet Marketing Unlimited, Corp, n.d.24 Apr, 2019
https://sportsknowhow.com/horseshoes/rules/american-horseshoe-pitchers-association.html