APA (7th ed.) Citation

Birren, J. E. (1996). Encyclopedia of gerontology: Age, aging, and the aged. Academic Press.

Chicago Style (17th ed.) Citation

Birren, James E. Encyclopedia of Gerontology: Age, Aging, and the Aged. San Diego: Academic Press, 1996.

MLA (9th ed.) Citation

Birren, James E. Encyclopedia of Gerontology: Age, Aging, and the Aged. Academic Press, 1996.