APA (7 ম সংস্করণ) উদ্ধৃতি

World Health Organization. (2000). Tools for assessing the O&M status of water supply and sanitation in developing countries. World Health Organization.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

World Health Organization. Tools for Assessing the O&M Status of Water Supply and Sanitation in Developing Countries. Geneva: World Health Organization, 2000.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

World Health Organization. Tools for Assessing the O&M Status of Water Supply and Sanitation in Developing Countries. World Health Organization, 2000.