Sundari, Aulia, and Fitri Eriyanti. 2019. “PEMANFAATAN BANTUAN GLOBAL POSITIONING SYSTEM (GPS) OLEH KELOMPOK USAHA BERSAMA (KUB) NELAYAN DI JORONG PASIA TIKU KABUPATEN AGAM”. Ranah Research : Journal of Multidisciplinary Research and Development 1 (3), 416 -23. https://jurnal.ranahresearch.com/index.php/R2J/article/view/74.