Luck, D., Lancaster, G. (2013). “The Significance of CRM to the Strategies of Hotel
Companies.” Worldwide Hospitality and Tourism Themes, vol. 5, no. 1, 25 Jan. 2013, pp. 55–66, www.emerald.com/insight/content/doi/10.1108/17554211311292448/full/html, 10.1108/17554211311292448. Accessed 23 Feb. 2020.