Wickham, T. F. (1972). Seamanship (Ed.2.). English Universities press.
Dyfyniad Arddull ChicagoWickham, T F. Seamanship. Ed.2. London: English Universities press, 1972.
Dyfyniad MLAWickham, T F. Seamanship. Ed.2. English Universities press, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.