Wasu Amaritsut, Juangjun Duangpatra, and Tiamjai Komkris. “Anatomy and Development of Khon Kaen 60-3, Kaset 1 and Tainan 9 Peanut Seed Coat”. Agriculture and Natural Resources, vol. 28, no. 3, Sept. 1994, pp. 324-32, https://li01.tci-thaijo.org/index.php/anres/article/view/241418.