Fernández-Ballesteros, R., & Wahl, H. (2009). Berlin declaration on the quality of life for older adults: Closing the gap between scientific knowledge and intervention. European journal of ageing, 6(1), . https://doi.org/10.1007/s10433-009-0107-y
Chicago-Zitierstil (17. Ausg.)Fernández-Ballesteros, Rocío, und Hans-Werner Wahl. "Berlin Declaration on the Quality of Life for Older Adults: Closing the Gap Between Scientific Knowledge and Intervention." European Journal of Ageing 6, no. 1 (2009). https://doi.org/10.1007/s10433-009-0107-y.
MLA-Zitierstil (9. Ausg.)Fernández-Ballesteros, Rocío, und Hans-Werner Wahl. "Berlin Declaration on the Quality of Life for Older Adults: Closing the Gap Between Scientific Knowledge and Intervention." European Journal of Ageing, vol. 6, no. 1, 2009, https://doi.org/10.1007/s10433-009-0107-y.