Rochmadi, Sunar. “PERAWATAN ALAT UKUR TANAH DIGITAL”. Inersia : Jurnal Teknik Sipil dan Arsitektur 1, no. 1 (March 24, 2016). Accessed June 6, 2025. https://jurnal.uny.ac.id/index.php/inersia/article/view/8231.