Não informado. World Weather Watch Planning Report. World Meteorological Organization.
Chicago-referens (17:e uppl.)Não informado. World Weather Watch Planning Report. Geneve, Suíça: World Meteorological Organization.
MLA-referens (8:e uppl.)Não informado. World Weather Watch Planning Report. World Meteorological Organization.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.