Sutruedee Prathuangwong, Wicha Charleepraom, and Tharmmasak Sommartya. “Sunflower Diseases in Some Growing Areas of Thailand”. Agriculture and Natural Resources, vol. 23, no. 3, Sept. 1989, pp. 287-04, https://li01.tci-thaijo.org/index.php/anres/article/view/242307.