APA-Zitierstil (7. Ausg.)

Kelly, J. R., & Kelly, J. R. (1993). Activity and aging: Staying involved in later life. Sage focus editions.

Chicago-Zitierstil (17. Ausg.)

Kelly, John Robert, und John R. Kelly. "Activity and Aging: Staying Involved in Later Life." Sage Focus Editions 1993.

MLA-Zitierstil (9. Ausg.)

Kelly, John Robert, und John R. Kelly. "Activity and Aging: Staying Involved in Later Life." Sage Focus Editions, 1993.