Dyfyniad APA
ebrary, Inc. (1994). Purposeful jettison of petroleum cargo. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc. Purposeful Jettison of Petroleum Cargo. Washington, D.C.: National Academy Press, 1994.
Dyfyniad MLA
ebrary, Inc. Purposeful Jettison of Petroleum Cargo. National Academy Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.