Sanha Panichajakul และ Duangjai Sillaparaya. (2007) Optimzation of growth and 20-Hydruxtecdtsone production of Vitex glabrata R.Br.cell suspension cultures. Khon Kaen University:ม.ป.ท.Sanha Panichajakul และ Duangjai Sillaparaya. 2007. Optimzation of growth and 20-Hydruxtecdtsone production of Vitex glabrata R.Br.cell suspension cultures. ม.ป.ท.:Khon Kaen University;Sanha Panichajakul และ Duangjai Sillaparaya. Optimzation of growth and 20-Hydruxtecdtsone production of Vitex glabrata R.Br.cell suspension cultures. ม.ป.ท.:Khon Kaen University, 2007. Print.