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<xml><bibliography><APA>Watcharin Ngampeungpis และผู้แต่งคนอื่นๆ. (2007) Effects of doping metal ions on structures and properties of perovskites Ba0.5Sr0.5Co0.8Fe0.2O3-δ. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Watcharin Ngampeungpis และผู้แต่งคนอื่นๆ. 2007. Effects of doping metal ions on structures and properties of perovskites Ba0.5Sr0.5Co0.8Fe0.2O3-δ. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Watcharin Ngampeungpis และผู้แต่งคนอื่นๆ.  Effects of doping metal ions on structures and properties of perovskites Ba0.5Sr0.5Co0.8Fe0.2O3-δ.  ม.ป.ท.:Chulalongkorn University, 2007. Print.</MLA></bibliography></xml>
