Citazione Stile APA (7a Edizione)

Carruthers, E., & Worthington, M. (2006). Children's mathematics: Making marks, making meaning (Second Edition.). Sage.

Citazione stile Chigago Style (17a edizione)

Carruthers, Elizabeth, e Maulfry Worthington. Children's Mathematics: Making Marks, Making Meaning. Second Edition. London ; Thousand Oaks, Calif.: Sage, 2006.

Citatione MLA (8a ed.)

Carruthers, Elizabeth, e Maulfry Worthington. Children's Mathematics: Making Marks, Making Meaning. Second Edition. Sage, 2006.