Hakim, Lailly Novila, and Harimukti Wandebori. “FROM CAPTIVE TO NON-CAPTIVE: LEVERAGING VERTICAL INTEGRATION FOR MARKET EXPANSION AT PT. PETRO ENERGY ”. Multidiciplinary Output Research For Actual and International Issue (MORFAI) 6, no. 5 (July 16, 2026): 7205–7212. Accessed July 16, 2026. https://radjapublika.com/index.php/MORFAI/article/view/5670.