Simanjuntak, Christopel H., et al. “Middleware Development for Heterogeneous Databases on Multi-Architecture Systems Small Medium Enterprise”. MATRIK : Jurnal Manajemen, Teknik Informatika Dan Rekayasa Komputer, vol. 25, no. 1, Nov. 2025, pp. 189-04, https://doi.org/10.30812/matrik.v25i1.5545.