Nitra Nuengchamnong และ Kornkanok Ingkaninan. (2017) An on-line LC-MS/ DPPH approach towards the quality control ofantioxidative ingredients in Sahastara. <i>Songklanakarin Journal of Science and Technology (SJST)</i>, <i>39</i>(1), 123.Nitra Nuengchamnong และ Kornkanok Ingkaninan. "An on-line LC-MS/ DPPH approach towards the quality control ofantioxidative ingredients in Sahastara". Songklanakarin Journal of Science and Technology (SJST) 39 (2017):123.Nitra Nuengchamnong และ Kornkanok Ingkaninan. An on-line LC-MS/ DPPH approach towards the quality control ofantioxidative ingredients in Sahastara. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2017.