W. Yentongchai. 1994. Analysis of volatile organic priority pollutants in water by headspace technique. Bangkok:Chulalongkorn University;
W. Yentongchai. (1994) Analysis of volatile organic priority pollutants in water by headspace technique (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
W. Yentongchai. Analysis of volatile organic priority pollutants in water by headspace technique. Bangkok:Chulalongkorn University, 1994.
W. Yentongchai. (1994) Analysis of volatile organic priority pollutants in water by headspace technique (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.