1. https://www.aoa.org/optometrists/tools-and-resources/sports-and-performance-vision/spv-club-kit/pdf-and-protocols, https://www.aoa.org/optometrists/membership/aoa-sections/aoa-sections/sports-vision-section/baseball, https://www.aoa.org/optometrists/membership/aoa-sections/aoa-sections/sports-vision-section/hockey, https://www.aoa.org/optometrists/membership/aoa-sections/aoa-sections/sports-vision-section/motocross, https://www.aoa.org/optometrists/membership/aoa-sections/aoa-sections/sports-vision-section/rugby. Retrieved from 23 June 2020.
2. Sports vision correction;Obstfeld,1995
3. The perception of baseball's rising fastball and breaking curveball;Bahill;J Exp Psychol Hum Percept Perform,1993
4. The Physics of Baseball;Adair,2002
5. See it and Sink it: Mastering Putting Through Peak Visual Performance;Farnsworth,1997