Syamsyir, S., Uddin, S. , Erlinda, N. and Basrizal, B. 2025. Development of a Diesel Engine Maintenance Textbook for Nautical Technology Students at West Sumatra Shipping Polytechnic. Global Education Journal. 3, 2 (Aug. 2025), 943-948. DOI:https://doi.org/10.59525/gej.v3i2.947.