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<xml><bibliography><APA>Pradit Nutthanara และผู้แต่งคนอื่นๆ. (2006) Synthesis of chelating polymer containing schiff base and sulfur for heavy metal adsorption. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Pradit Nutthanara และผู้แต่งคนอื่นๆ. 2006. Synthesis of chelating polymer containing schiff base and sulfur for heavy metal adsorption. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Pradit Nutthanara และผู้แต่งคนอื่นๆ.  Synthesis of chelating polymer containing schiff base and sulfur for heavy metal adsorption.  ม.ป.ท.:Chulalongkorn University, 2006. Print.</MLA></bibliography></xml>
