Cheong, X. Z. (2016). Removal of copper ions from aqueous solution by papaya seeds. School of Bioprocess Engineering, University Malaysia Perlis.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cheong, Xian Zhi. Removal of Copper Ions from Aqueous Solution by Papaya Seeds. Perlis, Malaysia: School of Bioprocess Engineering, University Malaysia Perlis, 2016.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Cheong, Xian Zhi. Removal of Copper Ions from Aqueous Solution by Papaya Seeds. School of Bioprocess Engineering, University Malaysia Perlis, 2016.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.