Cristancho Cárdenas, D. M., & Cristancho Cárdenas, L. Y. (2019). Learning based on mathematical problems: The fraction concept. Universidad Pedagógica y Tecnológica de Colombia.
Citazione stile Chigago Style (17a edizione)Cristancho Cárdenas, Deisy Marieta, e Leidy Yalima Cristancho Cárdenas. Learning Based on Mathematical Problems: The Fraction Concept. Universidad Pedagógica y Tecnológica de Colombia, 2019.
Citatione MLA (9a ed.)Cristancho Cárdenas, Deisy Marieta, e Leidy Yalima Cristancho Cárdenas. Learning Based on Mathematical Problems: The Fraction Concept. Universidad Pedagógica y Tecnológica de Colombia, 2019.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.
