Donaldson, Sven (1994). Basic Sailing Skills. Gloucester, Ontario: Canadian Yachting Association. p. 117. ISBN 0-920232-17-5. 0-920232-17-5
Donaldson, Sven (1992). Advanced Sailing Skills. Gloucester, Ontario: Canadian Yachting Association. p. 130. ISBN 0-920232-19-1. 0-920232-19-1
Smith, Lawrie (1985). Tuning Your Dinghy. West Sussex: Fernhurst Books. p. 51. ISBN 0-906754-18-6. 0-906754-18-6
Bethwaite, Frank (1993). High Performance Sailing. Camden, Maine: International Marine. p. 209 and 291. ISBN 0-87742-419-5. 0-87742-419-5