Cita APA (7a ed.)

ebrary, Inc, & Walker, A. (2005). Understanding quality of life in old age. Open University Press.

Cita Chicago Style (17a ed.)

ebrary, Inc, y Alan Walker. Understanding Quality of Life in Old Age. Maidenhead ; New York: Open University Press, 2005.

Cita MLA (9a ed.)

ebrary, Inc, y Alan Walker. Understanding Quality of Life in Old Age. Open University Press, 2005.