Thammaratana, Thani, Porntip Laummaunwai, Krongkaew Seesui, and Thidarut Boonmars. “The Contamination of Free-Living Amoebae in Tap Water”. Srinagarind Medical Journal 30, no. 5 (October 5, 2015): 85. Accessed May 29, 2022. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/40083.