^Alan Bridgewater, Gill BridgewaterBuilding Wooden Machines : Gears and Gadgets for the Adventurous Woodworker by Gill Bridgewater and Alan Bridgewater (2012, Paperback)ISBN 9781440322228 (revised Mar 2023)
^Alan Bridgewater, Gill Bridgewater (2012). Building Wooden Machines, P_F & W Media_edia. Indigo. ISBN 9781440322228 (revised Dec 2023)
^Bridgewater, Alan; Bridgewater, Gill (2014). Building Wooden Machines : Gears and Gadgets for the Adventurous Woodworker, F & W Pubns Inc. BiggerBooks. ISBN 9781440322228 (revised Nov 2023)
^ (2013). Building Wooden Machines : Gears and Gadgets for the Adventurous WoodworkerECampus. ISBN 9781440322228 (revised Apr 2015)