Castellano González, M., and A. Perozo Mena. “Mechanisms of Resistance To -Lactam Antibiotics in Staphylococcus Aureus”. Kasmera, Vol. 38, no. 1, Aug. 2010, pp. 18-35, https://produccioncientifica.luz.edu.ve/index.php/kasmera/article/view/4853.