DAFTAR PUSTAKA

http://www.academia.edu/23173733/MAKALAH_PERKEMBANGAN_TEKNOLOGI_SOFTWARE

http://www.academia.edu/8504228/Makalah-software

http://id.gamehubs.com/article.php?id=siri-vs-cortana-vs-google-now-mana-yang-paling-canggih

http://techno.okezone.com/read/2016/10/05/207/1507121/apa-sebenarnya-perbedaan-google-assistant-dan-now

https://www.maxmanroe.com/teknologi-cortana-fitur-personal-assitant-canggih-di-windows-10.html

http://tekno.tempo.co/read/news/2014/04/04/072567867/mengenal-asisten-digital-microsoft-cortana