Cita APA (7th ed.)

ebrary, Inc, Sheets, D. J., Bradley, D. B., & Hendricks, J. (2006). Enduring questions in gerontology. Springer Pub. Co..

Cita Chicago (17th ed.)

ebrary, Inc, Debra J. Sheets, Dana Burr Bradley, i Jon Hendricks. Enduring Questions in Gerontology. New York: Springer Pub. Co., 2006.

Cita MLA (9th ed.)

ebrary, Inc, et al. Enduring Questions in Gerontology. Springer Pub. Co., 2006.