Галюк І, Гамуляк НМ. PERSONNEL MOTIVATION AND MANAGERIAL COMMUNICATIONS AS FACTORS OF MANAGEMENT EFFECTIVENESS IN THE OIL AND GAS INDUSTRY. ecom [Internet]. 2026 May 30 [cited 2026 Jun. 1];(1(33):11-22. Available from: https://www.eung.nung.edu.ua/index.php/ecom/article/view/856