Dyfyniad APA
ebrary, Inc. (1995). Clean ships, clean ports, clean oceans: Controlling garbage and plastic wastes at sea. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc. Clean Ships, Clean Ports, Clean Oceans: Controlling Garbage and Plastic Wastes at Sea. Washington, D.C.: National Academy Press, 1995.
Dyfyniad MLA
ebrary, Inc. Clean Ships, Clean Ports, Clean Oceans: Controlling Garbage and Plastic Wastes at Sea. National Academy Press, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.