Anh, Do, 		Hoang, Le, 		Shihavong, Kitsamone, 		Uy, Nguyen, AND 		Huy, Nguyen.
" In vitro Antibacterial Activity of Quercetin Containing Extract from Hibiscus Sabdariffa L. Calyxes" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 32 Number 1S (15 March 2016)