Dyfyniad APA

Williamson, P. R. (2001). Ship manoeuvring principles and pilotage. Witherby.

Dyfyniad Arddull Chicago

Williamson, Paul R. Ship Manoeuvring Principles and Pilotage. London: Witherby, 2001.

Dyfyniad MLA

Williamson, Paul R. Ship Manoeuvring Principles and Pilotage. Witherby, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.