Ku, G. B. (1997). A description of recontextualised knowledge expressed in the written output of lower secondary pupils in Singapore in English and Mandarin.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ku, Geok Boon. A Description of Recontextualised Knowledge Expressed in the Written Output of Lower Secondary Pupils in Singapore in English and Mandarin. 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ku, Geok Boon. A Description of Recontextualised Knowledge Expressed in the Written Output of Lower Secondary Pupils in Singapore in English and Mandarin. 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.