APA (7 ম সংস্করণ) উদ্ধৃতি

United Nations. Dept. of Technical Co-operation for Development. (1991). Criteria for and approaches to water quality management in developing countries. United Nations.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

United Nations. Dept. of Technical Co-operation for Development. Criteria for and Approaches to Water Quality Management in Developing Countries. New York: United Nations, 1991.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

United Nations. Dept. of Technical Co-operation for Development. Criteria for and Approaches to Water Quality Management in Developing Countries. United Nations, 1991.