Sidauruk, Salomo Hasiolan, Ucuk Darusalam, and Novi Dian Nathasia. 2021. “Android-Based Vehicle Collateral Storage Application at PT. Pegadaian (Persero)”. Jurnal Mantik 4 (4):2662-69. https://doi.org/10.35335/mantik.Vol4.2021.1234.pp2662-2669.