Widianto, Harry. “Dari Pithecanthropus Ke Homo Erectus: Situs, Stratigrafi, Dan Pertanggalan Temuan Fosil Manusia Di Indonesia”. Berkala Arkeologi 26, no. 2 (November 11, 2006): 114–129. Accessed March 23, 2023. https://berkalaarkeologi.kemdikbud.go.id/index.php/berkalaarkeologi/article/view/936.