“ANALISIS KUALITAS PRODUK TURUNAN MINYAK BUMI DI PT X MELALUI UJI LABORATORIUM STANDAR (ASTM/API )”, Prosiding SNTEM, vol. 5, no. 1, pp. 1680–1691, Dec. 2025, doi: 10.53026/prosidingsntem.v5i1.784.