APA aipamena

Bengtson, V. L., & Schaie, K. W. (1999). Handbook of theories of aging. New York: Springer Pub. Co.

Chicago Style aipamena

Bengtson, Vern L., và K. Warner Schaie. Handbook of Theories of Aging. New York: Springer Pub. Co, 1999.

MLA aipamena

Bengtson, Vern L., và K. Warner Schaie. Handbook of Theories of Aging. New York: Springer Pub. Co, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.