Varmus, Michal, and Milan Kubina. “Management of Sports Clubs in the Town Based on the Principles of Cooperation”. Global Journal of Business, Economics and Management: Current Issues 8, no. 2 (July 30, 2018): 38–42. Accessed May 17, 2024. https://www.un-pub.eu/ojs/index.php/gjbem/article/view/1135.