Perlmutter, M., & Hall, E. (1992). Adult development and aging (2nd.ed.). John Wiley & Sons.
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Dyfyniad Arddull Chicago
Perlmutter, Marion, and Elizabeth Hall. Adult Development and Aging. 2nd.ed. New York: John Wiley & Sons, 1992.
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Dyfyniad MLA
Perlmutter, Marion, and Elizabeth Hall. Adult Development and Aging. 2nd.ed. John Wiley & Sons, 1992.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.