Watts, O. M. (1971). Coastal and ocean seamanship. Thomas reed.
Chicago Style aipamenaWatts, Oswald M. Coastal and Ocean Seamanship. London: Thomas reed, 1971.
MLA aipamenaWatts, Oswald M. Coastal and Ocean Seamanship. Thomas reed, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.