MLA

Poston, Dudley L, and Peter Uhlenberg. International Handbook of Population Aging. Springer Netherlands, 2009.

APA

Poston, D. L, & Uhlenberg, P. (2009). International Handbook of Population Aging. Springer Netherlands.

Chicago

Poston, Dudley L., and Peter Uhlenberg. International Handbook of Population Aging. : Springer Netherlands, 2009.