Soedjito, B. B. “Strategi Pengembangan Kawasan Timur Indonesia: Isu Pokok, Kebijaksanaan Dan Program Pembangunan”. Journal of Regional and City Planning, vol. 6, no. 17, Apr. 1995, pp. 68-72, https://journals.itb.ac.id/index.php/jpwk/article/view/4418.