LTHDH Thuyết trình

https://www.google.com.vn/search?q=NextApp.&oq=NextApp.&aqs=chrome..69i57j69i60l2&sourceid=chrome&ie=UTF-8#newwindow=1&q=file+management+android+operating+system
http://www.stevesandroidguide.com/android-files/
https://developer.android.com/index.html#q=Storage
https://developer.android.com/guide/topics/data/index.html
https://developer.android.com/guide/topics/data/data-storage.html
https://developer.android.com/training/basics/data-storage/files.html#InternalVsExternalStorage
https://developer.android.com/training/basics/data-storage/databases.html
https://developer.android.com/guide/topics/providers/document-provider.html?hl=vi
http://android.stackexchange.com/questions/39542/confused-by-the-many-locations-of-the-virtual-sdcard
http://android.stackexchange.com/questions/35541/why-did-sdcard-turn-into-sdcard-0-with-4-2