Poerwati, Sri, 		Namiroh, Siti Nabila, AND 		Mujiyono, Mujiyono.
"Durio Zibethinus Murr. Peel and Zeolite In Reducing the Hardness of Water" <em>Jurnal Teknokes</em> [Online], Volume 15 Number 2 (28 June 2022)