Yunus, F.- ul-N., Malik, H., Hadi, S., Shahzad, M. I., Irfan, M., Ali, S., & Muhammad, A. (2017). Isolation and Identification of Protease Enzyme Producing Bacillus subtilis from Soil. PSM Microbiology, 2(1), 15–19. Retrieved from https://psmjournals.org/index.php/microbiol/article/view/112