Wilson-Amadi , Nene Ahuruele, and Dr. Justin Gabriel. “E-Ticketing System of Airline Operators in Nigeria: Evolution, Chalenges, Propects”. International Journal of Business Diplomacy and Economy 2, no. 8 (August 25, 2023): 56–76. Accessed July 22, 2024. https://inter-publishing.com/index.php/ijbde/article/view/2410.