Yip, S. H. (2011). Relationships Between Mathematical Visuality, Mathematical Performance, Word Problem Solving Ability and Attitude Toward Learning of Mathematics Among Lower Secondary School Students.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yip, Siew Ha. Relationships Between Mathematical Visuality, Mathematical Performance, Word Problem Solving Ability and Attitude Toward Learning of Mathematics Among Lower Secondary School Students. 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Yip, Siew Ha. Relationships Between Mathematical Visuality, Mathematical Performance, Word Problem Solving Ability and Attitude Toward Learning of Mathematics Among Lower Secondary School Students. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.