Swaran Singh, C. K. (2014). Portfolio as an assessment tool in selected Malaysian English as a Second Langauge secondary classrooms.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Swaran Singh, Charanjit Kaur. Portfolio as an Assessment Tool in Selected Malaysian English as a Second Langauge Secondary Classrooms. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Swaran Singh, Charanjit Kaur. Portfolio as an Assessment Tool in Selected Malaysian English as a Second Langauge Secondary Classrooms. 2014.
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