Dyfyniad APA

(1988). Worldwide cruises and shiplines: Operating instructions and use of the OAG Worldwide cruise and shipline guide (2nd ed.). National Pub.

Dyfyniad Arddull Chicago

Worldwide Cruises and Shiplines: Operating Instructions and Use of the OAG Worldwide Cruise and Shipline Guide. 2nd ed. Emlsford, N.Y: National Pub, 1988.

Dyfyniad MLA

Worldwide Cruises and Shiplines: Operating Instructions and Use of the OAG Worldwide Cruise and Shipline Guide. 2nd ed. National Pub, 1988.

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