Ng, S. H., & Koay, P. L. (2009). Secondary school pupils' understanding of equation solving.
استشهاد بنمط شيكاغوNg, Soh Hua., و Phong Lee Koay. Secondary School Pupils' Understanding of Equation Solving. 2009.
MLA استشهادNg, Soh Hua., و Phong Lee Koay. Secondary School Pupils' Understanding of Equation Solving. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.