Mulyawan, Rahman, and Dede Sri Kartini. “Implementation of State Defense Policy in Border Area A Case Study in Natuna District, Indonesia”. International Journal of Engineering & Technology 7, no. 4.38 (December 3, 2018): 1275–1278. Accessed November 24, 2024. https://sciencepubco.com/index.php/ijet/article/view/27804.