1. Accenture, Seabury Consulting. (2021). Top commodity increase in global air cargo trade between April and May 2020. Accessed Jan 2, 2022, from https://www.statista.com/statistics/1139488/increase-top-commodities-global-air-cargo-trade/
2. Airline Business. (2008). Available at https://www.flightglobal.com/media-centre/our-brands/airline-business
3. ATAG. (2020). Facts & figures. Accessed July 16, 2021, from https://www.atag.org/facts-figures
4. Akhoondnejad, A. (2016). Tourist loyalty to a local cultural event: The case of Turkmen handicrafts festival. Tourism Management, 52, 468–477.
5. AfDB. (2015) Africa tourism monitor: Unlocking Africa’s tourism potential. Available at: http://www.afdb.org/fileadmin/uploads/afdb/Documents/Publications/Africa_Tourism_Monitor_-_Unlocking_Africa’s_Tourism_Potential_–_Vol_3_–_Issue_1.pdf