Charan Ditchaiwong และ Narin Poolperm; Chamnan Tongklan; Manoch Tongjiem. (1997) Application of NAA on Seed Quality Improvement of Chinese Convolvulus. <i>Thai Agricultural Research Journal</i>, <i>15</i>(2), 120-126.Charan Ditchaiwong และ Narin Poolperm; Chamnan Tongklan; Manoch Tongjiem. "Application of NAA on Seed Quality Improvement of Chinese Convolvulus". Thai Agricultural Research Journal 15 (1997):120-126.Charan Ditchaiwong และ Narin Poolperm; Chamnan Tongklan; Manoch Tongjiem. Application of NAA on Seed Quality Improvement of Chinese Convolvulus. Department of Agriculture:ม.ป.ท. 1997.