Phan, H., N. Nhi, L. Tien, C. Phuong, L. Ngan, P. Trang, and H. Nguyen. “Construction of Expression Plasmid for Bacillus Subtilis Using Pspac Promoter and BgaB As a Reporter”. Science and Technology Development Journal, Vol. 22, no. 2, June 2019, pp. 239-46, doi:https://doi.org/10.32508/stdj.v22i2.1284.