APA

Fernandez-Ballesteros R., Frensch P. A., Hofer S. M., Park D. C., Pinquart M., Silbereisen R. K., Staudinger U. M., Wahl H. & Whitfield K. E. (2009). Berlin declaration on the quality of life for older adults: closing the gap between scientific knowledge and intervention. : European journal of ageing.

Chicago

Fernandez-Ballesteros Rocio, Frensch Peter A, Hofer Scott M, Park Denise C, Pinquart Martin, Silbereisen Rainer K, Staudinger Ursula M, Wahl Hans-Werner and Whitfield Keith E. 2009. Berlin declaration on the quality of life for older adults: closing the gap between scientific knowledge and intervention. : European journal of ageing.

Harvard

Fernandez-Ballesteros R., Frensch P. A., Hofer S. M., Park D. C., Pinquart M., Silbereisen R. K., Staudinger U. M., Wahl H. and Whitfield K. E. (2009). Berlin declaration on the quality of life for older adults: closing the gap between scientific knowledge and intervention. : European journal of ageing.

MLA

Fernandez-Ballesteros Rocio, Frensch Peter A, Hofer Scott M, Park Denise C, Pinquart Martin, Silbereisen Rainer K, Staudinger Ursula M, Wahl Hans-Werner and Whitfield Keith E. Berlin declaration on the quality of life for older adults: closing the gap between scientific knowledge and intervention. : European journal of ageing. 2009.