APA
World Health Organization, . (1985). Guidelines for drinking - water quality vol 3 : drinking-water quality control in small-community supplies. CBS Publishers & Distributors Pvt. Ltd., New Delhi: .
Chicago
World Health Organization, . 1985. Guidelines for drinking - water quality vol 3 : drinking-water quality control in small-community supplies. CBS Publishers & Distributors Pvt. Ltd., New Delhi: .
Harvard
World Health Organization, . (1985). Guidelines for drinking - water quality vol 3 : drinking-water quality control in small-community supplies. CBS Publishers & Distributors Pvt. Ltd., New Delhi: .
MLA
World Health Organization, . Guidelines for drinking - water quality vol 3 : drinking-water quality control in small-community supplies. CBS Publishers & Distributors Pvt. Ltd., New Delhi: . 1985.