Cita APA (7a ed.)
ebrary, Inc, Bass, S. A., & Weiss, R. S. (2002). Challenges of the third age: Meaning and purpose in later life. Oxford University Press.
Cita Chicago Style (17a ed.)
ebrary, Inc, Scott A. Bass, y Robert Stuart Weiss. Challenges of the Third Age: Meaning and Purpose in Later Life. Oxford [England] ; New York: Oxford University Press, 2002.
Cita MLA (9a ed.)
ebrary, Inc, et al. Challenges of the Third Age: Meaning and Purpose in Later Life. Oxford University Press, 2002.
Precaución: Estas citas no son 100% exactas.