^Tony Dadland & Hans-Erhard Lessing. Bicycle Design: An Illustrated History. 麻省理工學院出版社. 2014: 17. Before starting, one has to screw the saddle just to such a height that the feet still stand on the ground...
^牛津英語詞典. 4. A fixed seat for the rider of a bicycle, motorcycle, etc. 1819 Belles-lettres Repository May 31/2 The Velocipede, or Swift-walker... consists of two wheels, one behind the other, connected by a perch, on which a saddle is placed for the seat of the traveller... The saddle may be raised or lowered..at pleasure, and thus suited to the height of various persons.
