World Meteorological Organization. (1969). Assessing the economic value of a national meteorological service. World Meteorological Organization.
Citazione stile Chigago Style (17a edizione)World Meteorological Organization. Assessing the Economic Value of a National Meteorological Service. Geneva: World Meteorological Organization, 1969.
Citatione MLA (9a ed.)World Meteorological Organization. Assessing the Economic Value of a National Meteorological Service. World Meteorological Organization, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.