Choo, W. L. (2009). Teachers experiences towards the use of portfolio as an assessment tool in early childhood education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Choo, Wai Ling. Teachers Experiences Towards the Use of Portfolio as an Assessment Tool in Early Childhood Education. 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Choo, Wai Ling. Teachers Experiences Towards the Use of Portfolio as an Assessment Tool in Early Childhood Education. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.