Effects of the Ethanolic Extracts of Guava Leaves, Licorice Roots and Cloves on the Cariogenic Properties of Streptococcus mutans, Phaiboon, Nalita, Pulbutr Pawitra, Sungthong Bunleu, and Rattanakiat Sakulrat , Pharmacognosy Journal, September 2019, Volume 11, Issue 5, p.1029-1036, (2019)