APA (7th ed.) Citation

United Nations. (1968). Water resources development in the United States of America and Europe.

Chicago Style (17th ed.) Citation

United Nations. Water Resources Development in the United States of America and Europe. (Austria, 1968.

MLA (9th ed.) Citation

United Nations. Water Resources Development in the United States of America and Europe. 1968.

Warning: These citations may not always be 100% accurate.