MLA

Hoffmann, Rasmus, and Land C Kenneth. Socioeconomic Differences In Old Age Mortality. Springer Netherlands, 2008.

APA

Hoffmann, R., & Kenneth, L. C. (2008). Socioeconomic Differences in Old Age Mortality. Springer Netherlands.

Chicago

Hoffmann, Rasmus, and Land C Kenneth. Socioeconomic Differences In Old Age Mortality. : Springer Netherlands, 2008.