<?xml version="1.0" encoding="UTF-8"?>
<xml><bibliography><APA>Nicha Tangchupong และผู้แต่งคนอื่นๆ. (2007) Catalytic performance of sulfated zirconia cataylsts in isobutene synthesis from synthesis gas. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Nicha Tangchupong และผู้แต่งคนอื่นๆ. 2007. Catalytic performance of sulfated zirconia cataylsts in isobutene synthesis from synthesis gas. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Nicha Tangchupong และผู้แต่งคนอื่นๆ.  Catalytic performance of sulfated zirconia cataylsts in isobutene synthesis from synthesis gas.  ม.ป.ท.:Chulalongkorn University, 2007. Print.</MLA></bibliography></xml>
