Carruthers, E., & Worthington, M. (2006). Children's mathematics: Making marks, making meaning (Second Edition.). Sage.
Chicago Style (17. basım) AtıfCarruthers, Elizabeth, ve Maulfry Worthington. Children's Mathematics: Making Marks, Making Meaning. Second Edition. London ; Thousand Oaks, Calif.: Sage, 2006.
MLA (8th ed.) AtıfCarruthers, Elizabeth, ve Maulfry Worthington. Children's Mathematics: Making Marks, Making Meaning. Second Edition. Sage, 2006.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..