Syamsyir, Syamsyir, Soleh Uddin, Nelfi Erlinda, and Basrizal Basrizal. “Development of a Diesel Engine Maintenance Textbook for Nautical Technology Students at West Sumatra Shipping Polytechnic”. Global Education Journal 3, no. 2 (August 28, 2025): 943–948. Accessed March 1, 2026. https://journal.civiliza.org/index.php/gej/article/view/947.