Sutjahjo, Kusumo, Tri Wulan Sari, and Ghaisani Hawari. “ANALISIS PRODUKTIVITAS PENGEBORAN TANAH MENGGUNAKAN ALAT RCD (REVERSE CIRCULATION DRILLING)”. Jurnal Ilmiah Teknologi Infomasi Terapan 8, no. 1 (December 15, 2021): 100–105. Accessed April 20, 2024. https://journal.widyatama.ac.id/index.php/jitter/article/view/727.