Không rõ. (1999). Contemporary mathematics in context: A unified approach. Course 3. Part B. EverydayLearning.
استشهاد بنمط شيكاغوKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
MLA استشهادKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.