Rama Rao, M., et al. “A Comparative Study of Antimicrobial Activity of Curcuma Amada and Alpinia Galanga of Zingiberaceae Family”. Asian Journal of Chemistry, vol. 20, no. 7, Mar. 2010, pp. 5293-00, https://asianpubs.org/index.php/ajchem/article/view/12947.