Vityunin, Volodymyr. “Development of Professional Competence of Trade Employees in the Context of Ensuring the Quality of Working Life”. Regional aspects of productive forces development of Ukraine, no. 25 (December 16, 2020): 122–127. Accessed July 16, 2026. https://rarrpsu.wunu.edu.ua/index.php/rapfdu/article/view/401.