World Health Organization & World Health Organization. (2005). Water for life, making it happen. World Health Orgnization.
Citazione stile Chigago Style (17a edizione)World Health Organization e World Health Organization. Water for Life, Making It Happen. : World Health Orgnization, 2005.
Citatione MLA (9a ed.)World Health Organization e World Health Organization. Water for Life, Making It Happen. World Health Orgnization, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.