Cofnodi Dyfyniadau
Dyfyniad APA
ebrary, Inc, Wilmoth, J. M., & Ferraro, K. F. (2007). Gerontology: Perspectives and issues (3rd ed.). Springer Pub..
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Dyfyniad Arddull Chicago
ebrary, Inc, Janet M. Wilmoth, and Kenneth F. Ferraro. Gerontology: Perspectives and Issues. 3rd ed. New York: Springer Pub., 2007.
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Dyfyniad MLA
ebrary, Inc, et al. Gerontology: Perspectives and Issues. 3rd ed. Springer Pub., 2007.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.