Harahap, Minta Ade Doliana, Andri Soemitra, and Tri Inda Fadhila Rahma. “Market Penetration Strategy by Increasing Firm Competitiveness ”. Golden Ratio of Marketing and Applied Psychology of Business 5, no. 1 (October 1, 2024): 44–52. Accessed October 19, 2026. https://www.goldenratio.id/index.php/grmapb/article/view/712.