Siripan Srijugawan และ Rattanaporn Promsattha; Yoopadee Sitthiboot; Somporn Suriyant; Suphinya Boonmanop. (2005) Relation of Rotenone and Starch Content in Derris Roots at the Different Ages of Harvest. <i>Thai Agricultural Research Journal</i>, <i>23</i>(2), 181-187.Siripan Srijugawan และ Rattanaporn Promsattha; Yoopadee Sitthiboot; Somporn Suriyant; Suphinya Boonmanop. "Relation of Rotenone and Starch Content in Derris Roots at the Different Ages of Harvest". Thai Agricultural Research Journal 23 (2005):181-187.Siripan Srijugawan และ Rattanaporn Promsattha; Yoopadee Sitthiboot; Somporn Suriyant; Suphinya Boonmanop. Relation of Rotenone and Starch Content in Derris Roots at the Different Ages of Harvest. Department of Agriculture:ม.ป.ท. 2005.