World Meteorological Organization. (1971). Technical regulations. World Meteorological Organization.
Citazione stile Chigago Style (17a edizione)World Meteorological Organization. Technical Regulations. Geneva: World Meteorological Organization, 1971.
Citatione MLA (9a ed.)World Meteorological Organization. Technical Regulations. World Meteorological Organization, 1971.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.