Penpun Wetwitayaklung และผู้แต่งคนอื่นๆ. (2009) Chemical Constituents and Antimicrobial Activity of Essential Oil and Extracts of Heartwood of Aquilaria crassna Obtained from Water Distillation and Supercritical Fluid Carbon Dioxide Extraction. <i>Silpakorn University Science and Technology Journal</i>, <i>3</i>(1), 25-33.Penpun Wetwitayaklung และผู้แต่งคนอื่นๆ. "Chemical Constituents and Antimicrobial Activity of Essential Oil and Extracts of Heartwood of Aquilaria crassna Obtained from Water Distillation and Supercritical Fluid Carbon Dioxide Extraction". Silpakorn University Science and Technology Journal 3 (2009):25-33.Penpun Wetwitayaklung และผู้แต่งคนอื่นๆ. Chemical Constituents and Antimicrobial Activity of Essential Oil and Extracts of Heartwood of Aquilaria crassna Obtained from Water Distillation and Supercritical Fluid Carbon Dioxide Extraction. Silpakorn University Research and Development Institute:ม.ป.ท. 2009.