Manurung, Vuko A.T, Aidhanis Kusuma Praja, and Yohanes C Sutama. 2017. “MENINGKATKAN PHYSICAL AVAILABILITY (PA) SCANIA P380 DENGAN PROGRAM CUSTOMER SOLUTION MANAGEMENT DI PT TSP CUSTOMER PT UNITED TRACTORS SITE SATUI – SUNGAI DANAU”. Technologic 7 (2). https://technologic.polytechnic.astra.ac.id/index.php/firstjournal/article/view/189.