Citação norma APA

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

Citação norma Chicago

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

Citação norma MLA

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

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.