Soepandji, Kris Wijoyo. “Geopolitik, Negara, Dan Bangsa Masa Kini”. Jurnal Lemhannas RI 7, no. 1 (July 28, 2020): 41-58. Accessed May 18, 2024. https://jurnal.lemhannas.go.id/index.php/jkl/article/view/50.