Goryushkina, Natalia Ye., Dmitry V. Shkurkin, Antonina S. Petrenko, Sergey Y. Demin, and Natalia S. Yarovaya. “Marketing Management in the Sphere of Hotel and Tourist Services”. International Review of Management and Marketing 6, no. 6S (August 18, 2016): 207–213. Accessed September 25, 2022. https://econjournals.com/index.php/irmm/article/view/2961.