Efendi, M. Roykhan, and Tias Andarini Indarwati. “Swot Analysis to Determine Competitive Strategies at PT Pelni (persero) Surabaya Branch”. International Management Conference and Progressive Papers 1 (November 15, 2023): 380–393. Accessed April 5, 2025. https://proceeding.unesa.ac.id/index.php/immersive/article/view/965.