Редькин, Александр Германович, and Андрей Викторович Дудник. “25 YEARS TO PROFESSIONAL TOURIST EDUCATION IN ALTAI STATE UNIVERSITY (PART 1)”. Siberian Journal of Tourism and Economic0, no. 9 (December 27, 2018): 5-13. Accessed December 23, 2025. https://journal.asu.ru/st/article/view/4963.