Maulana, Muhammad, 		Parlindungan, John, 		Rettob, Abraham, 		Siregar, Lamtiar, AND 		Hitijahubessy, Hendro.
" Characterization of Clay from Merauke Regency and Its Utilization as an Adsorbent of Free Fatty Acids in the Purification of Waste Cooking Oil" <em>Fullerene Journal of Chemistry</em> [Online], Volume 10 Number 2 (31 October 2025)