APA (7th ed.) Citation

Wahl, H., Siebert, J. S., & Tauber, B. (2017). Psychological theories of successful aging. Encyclopedia of Geropsychology ; Volume 3: O-Z.

Chicago Style (17th ed.) Citation

Wahl, Hans-Werner, Jelena Sophie Siebert, and Benjamin Tauber. "Psychological Theories of Successful Aging." Encyclopedia of Geropsychology ; Volume 3: O-Z 2017.

MLA (9th ed.) Citation

Wahl, Hans-Werner, et al. "Psychological Theories of Successful Aging." Encyclopedia of Geropsychology ; Volume 3: O-Z, 2017.