Ong-ard Lawhavinit, Kiti Srisuparb, Nongnuch Jantaraj, and Supranee Chinabut. 1994. “Studies on Hexamita Disease in Intestine of Discus, Symphysodon aequifasciata”. Agriculture and Natural Resources 28 (1). Bangkok, Thailand:66-73. https://li01.tci-thaijo.org/index.php/anres/article/view/241377.