<?xml version="1.0" encoding="UTF-8"?>
<xml><bibliography><APA>Ruchuon Promnimit และผู้แต่งคนอื่นๆ. (2011) Preparation of rigid polyurethane foams using mixed metal complexes and pentaethylenehexamine as catalysts. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Ruchuon Promnimit และผู้แต่งคนอื่นๆ. 2011. Preparation of rigid polyurethane foams using mixed metal complexes and pentaethylenehexamine as catalysts. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Ruchuon Promnimit และผู้แต่งคนอื่นๆ.  Preparation of rigid polyurethane foams using mixed metal complexes and pentaethylenehexamine as catalysts.  ม.ป.ท.:Chulalongkorn University, 2011. Print.</MLA></bibliography></xml>
