Hanami, Zarah Arwieny, and Puji Lestari. 2021. “Characterization and Application of Mangosteen Peel Activated Carbon for Ammonia Gas Removal: 10.32526/Ennrj/19/2020298”. Environment and Natural Resources Journal 19 (4), 320-29. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/242691.