Prabawati, S. Y. ., and F. Fitriana. “Synthesis of 7-(Hydroxy) Coumarin and Its Activity Test As Antibacterial Against Staphylococcus Aureus and Shigella Flexneri”. Proceeding International Conference on Science and Engineering, vol. 1, Oct. 2017, pp. 141-5, doi:10.14421/icse.v1.285.