“Penerapan Coloring Graph Pada Sistem Pengingat dan Penjadwalan Imunisasi Dasar Lengkap” (2018) CESS (Journal of Computer Engineering, System and Science), 3(2), hlm. 128–133. Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/cess/article/view/9895 (Diakses: 7 Mei 2026).