Kittima Sonamit และ Orawon Chailapakul. (2009) Determination of sudan I-IV in chilli products using automated on-line solid phase extraction coupled with liquid chromatography-mass spectrometry. Chulalongkorn University:ม.ป.ท.Kittima Sonamit และ Orawon Chailapakul. 2009. Determination of sudan I-IV in chilli products using automated on-line solid phase extraction coupled with liquid chromatography-mass spectrometry. ม.ป.ท.:Chulalongkorn University;Kittima Sonamit และ Orawon Chailapakul. Determination of sudan I-IV in chilli products using automated on-line solid phase extraction coupled with liquid chromatography-mass spectrometry. ม.ป.ท.:Chulalongkorn University, 2009. Print.