APA (7th ed.) Citation

World Health Organization & World Health Organization. (2005). Water for life, making it happen. World Health Orgnization.

Chicago Style (17th ed.) Citation

World Health Organization and World Health Organization. Water for Life, Making It Happen. : World Health Orgnization, 2005.

MLA (9th ed.) Citation

World Health Organization and World Health Organization. Water for Life, Making It Happen. World Health Orgnization, 2005.