Cita APA (7a ed.)

Aiken, L. R. (1995). Aging: An introduction to gerontology. Sage.

Cita Chicago Style (17a ed.)

Aiken, Lewis R. Aging: An Introduction to Gerontology. Thousand Oaks, California [etc.]: Sage, 1995.

Cita MLA (9a ed.)

Aiken, Lewis R. Aging: An Introduction to Gerontology. Sage, 1995.