Mathematical Association of of Victoria & State College of Victoria at Rusden. Centre Studies in the Curriculum. (1980). The Mathematical adventure of RALPH. the Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mathematical Association of of Victoria و State College of Victoria at Rusden. Centre Studies in the Curriculum. The Mathematical Adventure of RALPH. [Melbourne, The Centre: the Association, 1980.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Mathematical Association of of Victoria و State College of Victoria at Rusden. Centre Studies in the Curriculum. The Mathematical Adventure of RALPH. the Association, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.