Adzami, Nuraiffa Syazwi, Miskiah Fadzilah Ghazali, Amira Hidayati Ramli, Husnul Azan Tajarudin, and Zawawi Daud. 2019. “A New Potential of Scalable Method for the Production of Calcium Carbonate by Bacillus Sphaericus in Batch Fermentation”. International Journal of Integrated Engineering 10 (9). https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2406.