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<xml><bibliography><APA>Arkom Paso และผู้แต่งคนอื่นๆ. (2008) Effect of extrusion conditions on physical properties of pipe grade high density polyethylene compound. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Arkom Paso และผู้แต่งคนอื่นๆ. 2008. Effect of extrusion conditions on physical properties of pipe grade high density polyethylene compound. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Arkom Paso และผู้แต่งคนอื่นๆ.  Effect of extrusion conditions on physical properties of pipe grade high density polyethylene compound.  ม.ป.ท.:Chulalongkorn University, 2008. Print.</MLA></bibliography></xml>
