K, Antonius Edi, Nasri Nasri, and Kuncoro Luhur Waskito. “PENGEMBANGAN APLIKASI SPHERICAL TRIANGLE PADA SIMULATOR GPS BERBASIS VISUAL BASIC 6.0”. Jurnal 7 Samudra 1, no. 1 (October 28, 2016): 16–22. Accessed May 20, 2024. https://ojs.pppm.poltekpel-sby.ac.id/index.php/7samudra/article/view/17.