Roydawaty Bunga. “THE IMPACT OF PERTAMINA’S FUEL PRICE INCREASE ON COMPETITORS’ COMPETITION STRATEGIES AND MARKET POSITIONS IN THE ENERGY INDUSTRY”. Akrab Juara : Jurnal Ilmu-Ilmu Sosial, vol. 11, no. 1, Feb. 2026, pp. 449-65, https://akrabjuara.com/index.php/akrabjuara/article/view/2752.