ebrary, Inc. (2003). The future of the public's health in the 21st century. National Academies Press.
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Dyfyniad Arddull Chicago
ebrary, Inc. The Future of the Public's Health in the 21st Century. Washington, D.C.: National Academies Press, 2003.
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Dyfyniad MLA
ebrary, Inc. The Future of the Public's Health in the 21st Century. National Academies Press, 2003.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.