Erfianto, R. “Business Process Improvement Pengelolaan Dokumen Elektronik Debitur Pada Bank Swasta: (Studi Kasus Sub Unit Vault Management Bank X)”. Indonesian Journal of Office Administration, vol. 1, no. 2, Desember 2019, hlm. 01-16, https://jurnal.ariyanti.ac.id/index.php/adminof/article/view/6.