1. Ajjan, H., & Hartshorne, R. (2008). Investigating faculty decisions to adopt Web 2.0 technologies: Theory & empirical tests. Internet & Higher Education, 11(2), 71-80. https://doi.org/10.1016/j.iheduc.2008.05.002
2. Akbari, E., Naderi, A., Simons, R. J., & Pilot, A. (2016). Student engagement and foreign language learning through online social networks. Asian-Pacific Journal of Second and Foreign Language Education, 1(4), 1-22. https://doi.org/10.1186/s40862-016-0006-7
3. Allen, M. (2012). An education in Facebook. Digital Culture and Education, 4(3), 213-225. http://hdl.handle.net/20.500.11937/12096
4. Anggoro, K., & Rueangrong, P. (2020). Facebook: An alternative learning platform for online English as a foreign language instruction in the time of COVID-19. Journal of Education Naresuan University, 23(1), 413-423. https://so06.tcithaijo.org/index.php/edujournal_nu/article/view/244419
5. Bobrov, L. (2018). Mobile messaging App map – February 2018. Market Intelligence Insight. https://www.similarweb.com/blog/mobile-messaging-app-map-2018