Siahaan, Rosna Yuherlina, April Gunawan Malau, and Susi Herawati. “Enhancing Sustainability Education in Maritime Cadet Training”. Jurnal Abdidas 5, no. 3 (June 19, 2024): 228 - 235. Accessed November 1, 2025. https://abdidas.org/index.php/abdidas/article/view/933.