Dyfyniad APA
Institute of Medicine (U.S.). Division of Health Promotion and Disease Prevention, ebrary, Inc, Cassells, J. S., & Berg, R. L. (1992). The second fifty years: Promoting health and preventing disability. National Academy Press.
Dyfyniad Arddull Chicago
Institute of Medicine (U.S.). Division of Health Promotion and Disease Prevention, Inc ebrary, Joseph S. Cassells, and Robert L. Berg. The Second Fifty Years: Promoting Health and Preventing Disability. Washington, D.C.: National Academy Press, 1992.
Dyfyniad MLA
Institute of Medicine (U.S.). Division of Health Promotion and Disease Prevention, et al. The Second Fifty Years: Promoting Health and Preventing Disability. National Academy Press, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.