1. EarBit
2. Chatfuel website. Retrived July 6 2018 from https://chatfuel.com Chatfuel website. Retrived July 6 2018 from https://chatfuel.com
3. Facebook for developers. April 12 2016. Retrieved July 6 2018 from https://developers.facebook.com/videos/f8-2016/introducing-bots-on-messenger Facebook for developers. April 12 2016. Retrieved July 6 2018 from https://developers.facebook.com/videos/f8-2016/introducing-bots-on-messenger
4. Forksy website. Retrieved July 6 2018 from https://getforksy.com Forksy website. Retrieved July 6 2018 from https://getforksy.com
5. Nombot