एपीए उद्धरण

Robbyn R Wacker & Karen A Roberto. (2011). Aging social policies: An international perspective. Sage.

शिकागो स्टाइल उद्धरण

Robbyn R Wacker और Karen A Roberto. Aging Social Policies: An International Perspective. California: Sage, 2011.

एमएलए उद्धरण

Robbyn R Wacker और Karen A Roberto. Aging Social Policies: An International Perspective. Sage, 2011.