Чепрас, Н. Г., and Н. Б. Костина, “MANAGEMENT SYSTEM EVALUATION IN TOURISM SECTOR BY CONSUMERS (ON DATA COLLECTED IN SVERDLOVSK REGION AND PERM KRAI)”, Статьи, Социум и власть, 40/2 (2013), 33-8, https://socium-vlast.owebs.ru/article/view/27921, accessed 8 Nov. 2026.