World Meteorological Organization. (1969). A note on climatological normals. World Meteorological Organization.
Cita Chicago (17th ed.)World Meteorological Organization. A Note on Climatological Normals. Geneva: World Meteorological Organization, 1969.
Cita MLA (9th ed.)World Meteorological Organization. A Note on Climatological Normals. World Meteorological Organization, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.