WHO(world health organization). (2005). Healthy ageing: Practical pointers on keeping well. WHO.
Citación estilo ChicagoWHO(world health organization). Healthy Ageing: Practical Pointers on Keeping Well. Geneva: WHO, 2005.
Cita MLAWHO(world health organization). Healthy Ageing: Practical Pointers on Keeping Well. WHO, 2005.
Warning: These citations may not always be 100% accurate.