Cofnodi Dyfyniadau
Dyfyniad APA
ebrary, Inc, Normand, J., Lempert, R. O., & O'Brien, C. P. (1994). Under the influence?: Drugs and the American work force. National Academy Press.
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Dyfyniad Arddull Chicago
ebrary, Inc, Jacques Normand, Richard O. Lempert, and Charles P. O'Brien. Under the Influence?: Drugs and the American Work Force. Washington, D.C.: National Academy Press, 1994.
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Dyfyniad MLA
ebrary, Inc, et al. Under the Influence?: Drugs and the American Work Force. National Academy Press, 1994.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.