“…These studies are about the topics such as customer satisfaction (Evanschitzky, H., Sharma, A. & Prykop, C., 2012;Zehrer & Pechlaner, 2006), marketing strategy (Dolnicar & Laesser, 2007), sales development techniques (Baltacı, 2015;Kurtulay, 2016), e-trade usage in travel agencies (Elhaj & Borakeh, 2015), sustainability (Marin-Pantelescu, Tăchiciu, Căpușneanu and Topor, 2019), service quality (Ghanda Abd-Aıla, 2006;Jones & Hoven-Tang, 2005) and employees' job satisfaction (Pearson, J. B., Barker, H. H. & Elliott, R. D., 1957).…”