Mongkolkajit, Jirawan, Jiranan Pullsirisombat, Seeroong Prichanont, Veerapat Tantayakom, Phatthanon Prasitchoke, dan Muenduen Phisalaphong. 2010. “γ-Alumina Doped Alginate Gel for Cell Immobilization in Fermentation Processes” 10 (1), 1-7. https://journal.ugm.ac.id/v3/AJChE/article/view/8060.