Dyfyniad APA
National Research Council (U.S.). Committee on Earth Resources & ebrary, Inc. (1996). Mineral resources and sustainability: Challenges for earth scientists. National Academy Press.
Dyfyniad Arddull Chicago
National Research Council (U.S.). Committee on Earth Resources and Inc ebrary. Mineral Resources and Sustainability: Challenges for Earth Scientists. Washington, D.C.: National Academy Press, 1996.
Dyfyniad MLA
National Research Council (U.S.). Committee on Earth Resources and Inc ebrary. Mineral Resources and Sustainability: Challenges for Earth Scientists. National Academy Press, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.