Bates, William H. (1920). "Chapter 10: Strain". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 106–13. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (1920). "Chapter 12: Palming". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 123–35. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (1920). "Chapter 15: Shifting and Swinging". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 159–71. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (July 1929). "The Use of the Sun Glass". Better Eyesight. New York: Central Fixation Publishing Co. Archived from the original on 30 October 2008. Retrieved 16 December 2008.
Rawstron, JA; Burley, CD; Elder, MJ (2005). "A systematic review of the applicability and efficacy of eye exercises". Journal of Pediatric Ophthalmology and Strabismus. 42 (2): 82–88. doi:10.3928/01913913-20050301-02. PMID15825744.
Donahue, Sean P. (February 2007). "Prescribing Spectacles in Children: A Pediatric Ophthalmologist's Approach". Optometry and Vision Science. 84 (2): 110–14. doi:10.1097/OPX.0b013e318031b09b. PMID17299340.
Rawstron, JA; Burley, CD; Elder, MJ (2005). "A systematic review of the applicability and efficacy of eye exercises". Journal of Pediatric Ophthalmology and Strabismus. 42 (2): 82–88. doi:10.3928/01913913-20050301-02. PMID15825744.
Donahue, Sean P. (February 2007). "Prescribing Spectacles in Children: A Pediatric Ophthalmologist's Approach". Optometry and Vision Science. 84 (2): 110–14. doi:10.1097/OPX.0b013e318031b09b. PMID17299340.
Bates, William H. (1920). "Chapter 10: Strain". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 106–13. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (1920). "Chapter 12: Palming". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 123–35. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (1920). "Chapter 15: Shifting and Swinging". Perfect Sight Without Glasses. New York: Central Fixation Publishing Co. pp. 159–71. ISBN8890075635. Archived from the original on 10 June 2016. Retrieved 27 January 2016.
Bates, William H. (July 1929). "The Use of the Sun Glass". Better Eyesight. New York: Central Fixation Publishing Co. Archived from the original on 30 October 2008. Retrieved 16 December 2008.