APA (7th ed.) Citation

World Meteorological Organization. (1980). Technical regulations: Hydrology and international hydrological codes (1980 ed.). Secretariat of the World Meteorological Organization.

Chicago Style (17th ed.) Citation

World Meteorological Organization. Technical Regulations: Hydrology and International Hydrological Codes. 1980 ed. Geneva: Secretariat of the World Meteorological Organization, 1980.

MLA (9th ed.) Citation

World Meteorological Organization. Technical Regulations: Hydrology and International Hydrological Codes. 1980 ed. Secretariat of the World Meteorological Organization, 1980.