Kim, T. S. (2007). The Modality Factor In Two Approaches Of Abacus-Based Calculation And Its Effects On Mental Arithmetic And School Mathematics Achievements [QA107.2. K49 2007 f rb].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kim, Teng Siang. The Modality Factor In Two Approaches Of Abacus-Based Calculation And Its Effects On Mental Arithmetic And School Mathematics Achievements [QA107.2. K49 2007 F Rb]. 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kim, Teng Siang. The Modality Factor In Two Approaches Of Abacus-Based Calculation And Its Effects On Mental Arithmetic And School Mathematics Achievements [QA107.2. K49 2007 F Rb]. 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.