Alfauzan Yendra, and Abdul Haris Salam. “ANALYSIS AND DETERMINATION OF HARD LAYERS USING GEOELECTRIC METHODS FOR THE BASIS OF CONSTRUCTION OF NEW BUILDINGS AT THE BENGKALIS STATE POLYTECHNIC”. Akrab Juara : Jurnal Ilmu-ilmu Sosial 10, no. 1 (February 5, 2025): 30–36. Accessed December 31, 2025. https://akrabjuara.com/index.php/akrabjuara/article/view/2337.