Fauzi, Ah. Sulhan, and Yasinta Sindy Pramesti. 2018. “Identifikasi Awal Pasir Besi Sungai Brantas”. Prosiding Seminar Nasional Multidisiplin 1 (October):162-66. https://ejournal.unwaha.ac.id/index.php/snami/article/view/283.