变速器 (自行车) (Chinese Wikipedia)

Stone, Hilary. Super Champion Osgear. Classic Lightweights. UK. 2007 [1 June 2010]. （原始内容存档于2012-04-17）. This site is all about rear derailleur gears...

gizmag.com (Global: 7,208^th place; Chinese: 7,583^rd place)

Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 58–61 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.
Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 162 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.
Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 286 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.

Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 58–61 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.
Graves, Clifford. Velocio, Grand Seigneur. [2007-03-17]. （原始内容存档于2011-07-21）.
Stone, Hilary. Super Champion Osgear. Classic Lightweights. UK. 2007 [1 June 2010]. （原始内容存档于2012-04-17）. This site is all about rear derailleur gears...
Norris, Eric. Campagnolo Cambio Corsa shifter. Campy Only!. 2010 [1 June 2010]. （原始内容存档于2021-04-25）.
Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 162 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.
Berto, Frank. Sunset for SunTour. [2007-03-17]. （原始内容存档于2008-12-05）.
Berto, Frank J. The Dancing Chain: History and Development of the Derailleur Bicycle 2nd ?. San Francisco, CA, USA: Cycle Publishing/Van der Plas Publications. 2005: 286 [2000] [2022-01-06]. （原始内容存档于2017-06-06）.
Rotor 1x13 (PDF). [2022-01-06]. （原始内容存档 (PDF)于2021-10-11）.
Best, Paul. Shimano's Dura-Ace Di2 electronic shifting to give road racers a time advantage. Gizmag. 2009-04-08 [2010-02-10]. （原始内容存档于2016-07-11）.