1. Abbasi, S., & Hameedullah, K. (2014). Measuring effectiveness of learning chatbot systems on student’s learning outcome and memory retention. Asian Journal of Applied Science and Engineering, 3(2) 251–260
2. Abdul-Kader, S. A., & Woods, J. (2015). Survey on chatbot design techniques in speech conversation systems. International Journal on Advanced Computer Science and Applications, 6(7), 72–80.
3. Alencar, M., & Netto, J. (2011). Developing a 3D conversation agent talking about online courses. In Proceedings of world conference on educational multimedia, hypermedia and telecommunications, pp. 1713–1719.
4. Andriotis, N. (2017). Are chatbots the next big thing in digital learning? Retrieved from https://www.talentlms.com/blog/chatbots-next-big-thing-digital-learning.
5. Arnold, A. (2018). How chatbots feed into Millennials’ need for instant gratification. Retrieved from https://www.forbes.com/sites/andrewarnold/2018/01/27/how-chatbots-feed-into-millennials-need-for-instant-gratification/#68883d736750.