Smith, S. S. (2006). Early childhood mathematics. London / New York: Pearson Education.
Chicago Style CitationSmith, Susan Sperry. Early Childhood Mathematics. London / New York: Pearson Education, 2006.
Cita MLASmith, Susan Sperry. Early Childhood Mathematics. London / New York: Pearson Education, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.