World Health Organization. (1998). Guidelines for drinking - water quality: Health Criteria and other supporting information (second.). World Health Organization.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিWorld Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. Geneva: World Health Organization, 1998.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিWorld Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. World Health Organization, 1998.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.