Purnawan Jati, Slamet Sujud. “Studi Interaksi Masyarakat Masa Lampau Suatu Analisis Model Graviti (Gravity Model)”. Berkala Arkeologi 19, no. 1 (May 28, 1999): 78–88. Accessed November 23, 2025. https://berkalaarkeologi.kemdikbud.go.id/index.php/berkalaarkeologi/article/view/794.