Belsky, J. K. (1990). The psychology of aging: Theory, research, and interventions (2nd ed.). Brooks/Cole Pub.
Chicago Style aipamenaBelsky, Janet K. The Psychology of Aging: Theory, Research, and Interventions. 2nd ed. Pacific Grove, Calif: Brooks/Cole Pub, 1990.
MLA aipamenaBelsky, Janet K. The Psychology of Aging: Theory, Research, and Interventions. 2nd ed. Brooks/Cole Pub, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.