Novak, M. (2006). Issues in aging. Boston: Pearson/A&B.
Trích dẫn kiểu ChicagoNovak, Mark. Issues in Aging. Boston: Pearson/A&B, 2006.
Deismireacht MLANovak, Mark. Issues in Aging. Boston: Pearson/A&B, 2006.
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