Cita APA (7a ed.)

Spira, M. (2006). Mapping your future: A proactive approach to aging. [s.n.].

Cita Chicago Style (17a ed.)

Spira, Marcia. Mapping Your Future: A Proactive Approach to Aging. [S.l.]: [s.n.], 2006.

Cita MLA (9a ed.)

Spira, Marcia. Mapping Your Future: A Proactive Approach to Aging. [s.n.], 2006.