Ong, H. L. (2017). Synthesis and characterization of Cobalt/Calcium Carbonate catalyst in the production of Carbon Nanotubes. School of Materials Engineering, Universiti Malaysia Perlis.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ong, Huey Lin. Synthesis and Characterization of Cobalt/Calcium Carbonate Catalyst in the Production of Carbon Nanotubes. Perlis,Malaysia: School of Materials Engineering, Universiti Malaysia Perlis, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ong, Huey Lin. Synthesis and Characterization of Cobalt/Calcium Carbonate Catalyst in the Production of Carbon Nanotubes. School of Materials Engineering, Universiti Malaysia Perlis, 2017.
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