Wawan Purwanto, Wagino, Hasan Maksum, Ahmd Arif, and Toto Sugiarto, Teknologi Pada Sistemalat Berat. UNP PRESS, 2020. Accessed: Sep. 24, 2026. [Online]. Available: https://unppress.unp.ac.id/index.php/unp-press/catalog/book/26