Android history, 역사, 히스토리
WIKIPEDIA ENG Android version history http://en.wikipedia.org/wiki/Android_version_history#Android_4.4_KitKat_.28API_level_19.29 WIKIPEDIA KOR 안드로이드 버전 역사 http://ko.wikipedia.org/wiki/%EC%95%88%EB%93%9C%EB%A1%9C%EC%9D%B4%EB%93%9C_%EB%B2%84%EC%A0%84_%EC%97%AD%EC%82%AC Android Versions Releases and their Names http://www.bhawanigarg.com/android-versions-releases-names/