Wilkner, K. (1974). Practical yacht navigator (2nd ed.). Nautical publishing.
Dyfyniad Arddull ChicagoWilkner, Kenneth. Practical Yacht Navigator. 2nd ed. Lymington: Nautical publishing, 1974.
Dyfyniad MLAWilkner, Kenneth. Practical Yacht Navigator. 2nd ed. Nautical publishing, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.