Loppies, Stanly H.D., Agustan Latif, and Dedi supriadi. “Geographical Information System Mapping of Temporary Landfills Using the Haversine Formula Method Based on Android”. Engineering And Technology Journal 7, no. 10 (October 6, 2022): 1563–1568. Accessed June 2, 2024. http://everant.org/index.php/etj/article/view/731.