Indrianto, Agoes Tinus Lis, Baswara Kristama, and Sugito Sugito. 2020. “THE CHANGING BEHAVIOR OF HOTEL GUEST DURING PANDEMIC COVID 19: CASE OF SURABAYA HOTELS”. International Conference of Business and Social Sciences 1 (1). https://debian.stiesia.ac.id/index.php/icobuss1st/article/view/11.