APA Zitierstil

WHO(world health organization). (2005). Healthy ageing: Practical pointers on keeping well. WHO.

Chicago Zitierstil

WHO(world health organization). Healthy Ageing: Practical Pointers on Keeping Well. Geneva: WHO, 2005.

MLA Zitierstil

WHO(world health organization). Healthy Ageing: Practical Pointers on Keeping Well. WHO, 2005.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.