APA
Environmental & occupational Health unit, . (2010). Water for Healthier Life. Colombo: Ministry of Health.
Chicago
Environmental & occupational Health unit, . 2010. Water for Healthier Life. Colombo: Ministry of Health.
Harvard
Environmental & occupational Health unit, . (2010). Water for Healthier Life. Colombo: Ministry of Health.
MLA
Environmental & occupational Health unit, . Water for Healthier Life. Colombo: Ministry of Health. 2010.