„PSA World Tour Rankings”. psaworldtour.com. 26. 11. 2019. Архивирано из оригинала 04. 01. 2021. г. Приступљено 22. 06. 2021.CS1 одржавање: Формат датума (веза)
„PSA World Tour Rankings”. psaworldtour.com. 26. 11. 2019. Архивирано из оригинала 11. 06. 2017. г. Приступљено 22. 06. 2021.CS1 одржавање: Формат датума (веза)
squash.as
"Grays of Cambridge: History"Архивирано 6 јул 2011 на сајту Wayback Machine - makers of rackets and founded in 1855 by Henry John Gray, the Champion rackets Player of England. "In those days, the rackets were made from one piece English ash, with a suede leather grip and natural gut. ... The 1980s witnessed a period of re-structuring and consolidation. The Cambridge rackets factory was forced to close in face of the move to graphite rackets, and production was moved to the Far East."
Zug, James. „History of Squash”. US Squash. Архивирано из оригинала 17. 7. 2011. г. Приступљено 17. 1. 2011.CS1 одржавање: Формат датума (веза)
web.archive.org
Zug, James. „History of Squash”. US Squash. Архивирано из оригинала 17. 7. 2011. г. Приступљено 17. 1. 2011.CS1 одржавање: Формат датума (веза)
"Grays of Cambridge: History"Архивирано 6 јул 2011 на сајту Wayback Machine - makers of rackets and founded in 1855 by Henry John Gray, the Champion rackets Player of England. "In those days, the rackets were made from one piece English ash, with a suede leather grip and natural gut. ... The 1980s witnessed a period of re-structuring and consolidation. The Cambridge rackets factory was forced to close in face of the move to graphite rackets, and production was moved to the Far East."
