APA-Zitierstil (7. Ausg.)
ebrary, Inc, Bass, S. A., & Weiss, R. S. (2002). Challenges of the third age: Meaning and purpose in later life. Oxford University Press.
Chicago-Zitierstil (17. Ausg.)
ebrary, Inc, Scott A. Bass, und Robert Stuart Weiss. Challenges of the Third Age: Meaning and Purpose in Later Life. Oxford [England] ; New York: Oxford University Press, 2002.
MLA-Zitierstil (9. Ausg.)
ebrary, Inc, et al. Challenges of the Third Age: Meaning and Purpose in Later Life. Oxford University Press, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.