Dyfyniad APA
National Research Council (U.S.). Physics Survey Committee & ebrary, Inc. (1986). An overview. National Academy Press.
Dyfyniad Arddull Chicago
National Research Council (U.S.). Physics Survey Committee and Inc ebrary. An Overview. Washington, D.C.: National Academy Press, 1986.
Dyfyniad MLA
National Research Council (U.S.). Physics Survey Committee and Inc ebrary. An Overview. National Academy Press, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.