Noer Hidayat, D., M. Maming, and S. Liong. “Utilization of Chicken Feather Biomass As Metal Zinc Adsorbent (Zn2+)”. Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta), vol. 10, no. 2, May 2019, pp. 11-24, doi:10.20956/ica.v10i2.6651.