Gaya APA

Organization, P, A, H. (1998). Natural Disaster Mitigation in Drinking Water and Sewerage Systems : Guidelines for Vulnerability Analysis . Washington DC: Pan American Health Organization.

Gaya MLA

Organization, Pan, American, Health. "Natural Disaster Mitigation in Drinking Water and Sewerage Systems : Guidelines for Vulnerability Analysis". Washington DC: Pan American Health Organization, 1998. Text.