The Mathematical Association of Western Australia & Title : One hundred mathematical problems for students aged 11 to 13 years. 100 mathematical problems for students aged 11 to 13 years. Mathematical Association of Western Australia, c1980.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)The Mathematical Association of Western Australia و Title : One hundred mathematical problems for students aged 11 to 13 years. 100 Mathematical Problems for Students Aged 11 to 13 Years. [s.l.]: Mathematical Association of Western Australia, c1980.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)The Mathematical Association of Western Australia و Title : One hundred mathematical problems for students aged 11 to 13 years. 100 Mathematical Problems for Students Aged 11 to 13 Years. Mathematical Association of Western Australia, c1980.