Riley, M. W., & Foner, A. (1968). Aging and society. Russell Sage Foundation.
Cita Chicago (17th ed.)Riley, Matilda White, i Anne Foner. Aging and Society. New York: Russell Sage Foundation, 1968.
Cita MLA (8th ed.)Riley, Matilda White, i Anne Foner. Aging and Society. Russell Sage Foundation, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.