Dyfyniad APA

ebrary, Inc, & Leung, P. (2011). Healthy aging. World Scientific Pub. Co..

Dyfyniad Arddull Chicago

ebrary, Inc, and Ping-Chung Leung. Healthy Aging. Hackensack, N.J.: World Scientific Pub. Co., 2011.

Dyfyniad MLA

ebrary, Inc, and Ping-Chung Leung. Healthy Aging. World Scientific Pub. Co., 2011.

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