APA
World Health Organization, . (1985). Guidelines for drinking water quality (vol-3): drinking water quality control in small community supplies. Geneva: World Health Oraganization.
Chicago
World Health Organization, . 1985. Guidelines for drinking water quality (vol-3): drinking water quality control in small community supplies. Geneva: World Health Oraganization.
Harvard
World Health Organization, . (1985). Guidelines for drinking water quality (vol-3): drinking water quality control in small community supplies. Geneva: World Health Oraganization.
MLA
World Health Organization, . Guidelines for drinking water quality (vol-3): drinking water quality control in small community supplies. Geneva: World Health Oraganization. 1985.