Keeble, W., & Cobden, D. W. (1971). Sailing instructors guide: Principles of sailing instruction for small craft. Kandy.
Dyfyniad Arddull ChicagoKeeble, W.B, and D W. Cobden. Sailing Instructors Guide: Principles of Sailing Instruction for Small Craft. Kent: Kandy, 1971.
Dyfyniad MLAKeeble, W.B, and D W. Cobden. Sailing Instructors Guide: Principles of Sailing Instruction for Small Craft. Kandy, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.