Bonazzi, R., and R. Schegg. “An Alternative to Online Travel Agencies for Retention of Hotel Customers”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 2, no. 1, Oct. 2016, pp. 219-24, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/14216.