1. Airline Business Magazine, 2014. Social Awareness. Airline Business Magazine, p. 37.
2. Airlines in Social Media;Badánik,2015
3. Baer, J., 2016. 6 Unforgettable Lessons from Southwest Airlines Social Media Crisis. [Online] Available at: https://www.convinceandconvert.com/social-media-case-studies/6-unforgettable-lessons-from-southwest-airlines-social-media-crisis/ [Accessed: 15 07 2019].
4. Booth, E., 2016. How Mobile Is Empowering Airlines To Drive Ancillary Revenues. [Online] Available at: https://blog-digital.travelport.com/how-mobile-is-empowering-airlines-to-drive-ancillary-revenues [Accessed: 15 July 2019].
5. Carlo Gutierrez, Alex Khizhniak, 2018. KLM Handles 2x More Customer Requests with Artificial Intelligence. [Online] Available at: https://www.altoros.com/blog/klm-handles-2x-more-customer-requests-with-artificial-intelligence/ [Accessed: 04 07 2019].