Dyfyniad APA

ebrary, Inc, & Brougham, R. R. (2009). New directions in aging research: Health and cognition. Nova Biomedical Books.

Dyfyniad Arddull Chicago

ebrary, Inc, and Ruby R. Brougham. New Directions in Aging Research: Health and Cognition. New York: Nova Biomedical Books, 2009.

Dyfyniad MLA

ebrary, Inc, and Ruby R. Brougham. New Directions in Aging Research: Health and Cognition. Nova Biomedical Books, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.