Không rõ. (1999). Contemporary mathematics in context: A unified approach. Course 3. Part B. EverydayLearning.
Chicago ZitierstilKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
MLA ZitierstilKhông rõ. Contemporary Mathematics in Context: A Unified Approach. Course 3. Part B. EverydayLearning, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.