The place name ''Kyiv'' is standardized in the authoritative database of Ukraine's toponyms maintained by Ukraine's mapping agency Derzhheokadastr. It has also been adopted by the United Nations GEGN Geographical Names Database, the United States Board on Geographic Names, the International Air Transport Association, the European Union, English-speaking foreign diplomatic missions and governments, several international organizations, and the ''Encyclopædia Britannica''. Some English-language news sources have adopted  in their style guides, including the AP, CP, and Reuters news services, media organizations in Ukraine, and some media organizations in Canada, the United Kingdom, and the United States.