Gutiérrez-Gutiérrez, A. (2015). Pedagogical knowledge of numbers and operations: An international comparison. Universidad de Almería.
Citazione stile Chigago Style (17a edizione)Gutiérrez-Gutiérrez, Araceli. Pedagogical Knowledge of Numbers and Operations: An International Comparison. Universidad de Almería, 2015.
Citatione MLA (9a ed.)Gutiérrez-Gutiérrez, Araceli. Pedagogical Knowledge of Numbers and Operations: An International Comparison. Universidad de Almería, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.