Pasaribu, E., D. S. Priyarsono, H. J. Siregar, and E. Rustiadi. “Multipolarity Effects of Growth Centers Between Kalimantan and Other Major Islands in Indonesia: Can It Diminish Inter-Island Disparity?”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 24, no. 2, Sept. 2015, pp. 403-16, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4487.