Indrajaya, Hendy, R. Hendra Priyo Utomo, Tectony Rachman, and Amie Kusuma Wardhani. “The Role of Spare Parts Availability and Maintenance Data for Sustainability Maintenance at PT. Djarum Kudus”. Research Horizon 4, no. 4 (August 12, 2024): 121–130. Accessed July 25, 2026. http://www.journal.lifescifi.com/index.php/RH/article/view/316.