“ANALISIS PERFORMA KINERJA BOILER A MENGGUNAKAN DIRECT METHOD DAN INDIRECT METHOD PADA AREA UTILITAS”. Prosiding Seminar Nasional Teknologi Energi dan Mineral 4, no. 1 (December 30, 2024): 587–594. Accessed October 12, 2026. https://sntem.akamigas.ac.id/index.php/psntem/article/view/208.