Không rõ. (1999). Contemporary mathematics in context: A unified approach. Course 3. Part B. EverydayLearning.
Chicago Style aipamenaKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
MLA aipamenaKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
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