Purwanto, Heru, Erie Kresna Andana, dan Triuli Novianti. “Sistem Informasi Perpustakaan (Studi Kasus: Perpustakaan Universitas Muhammadiyah Surabaya)”. Computing Insight : Journal of Computer Science 2, no. 1 (September 2, 2020). Diakses Desember 5, 2025. https://journal.um-surabaya.ac.id/CI/article/view/5894.