García-Reyes, Selene, and Gustavo Yañez-Ocampo. 2016. “MICROBIAL BIOSURFACTANTS: METHODS FOR THEIR ISOLATION AND CHARACTERIZATION”. Journal of Microbiology, Biotechnology and Food Sciences 6 (1):641-48. https://doi.org/10.15414/jmbfs.2016.6.1.641-648.