Heuvel-Panhuizen, M. v. d. (2001). Children learn mathematics: A learning-teaching trajectory with intermediate attainment targets for calculation with whole numbers in primary school. Freudenthal Institute, Utrecht University and National Institute for Curriculum Development (SLO).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Heuvel-Panhuizen, Marja van den. Children Learn Mathematics: A Learning-teaching Trajectory with Intermediate Attainment Targets for Calculation with Whole Numbers in Primary School. Netherlands: Freudenthal Institute, Utrecht University and National Institute for Curriculum Development (SLO), 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Heuvel-Panhuizen, Marja van den. Children Learn Mathematics: A Learning-teaching Trajectory with Intermediate Attainment Targets for Calculation with Whole Numbers in Primary School. Freudenthal Institute, Utrecht University and National Institute for Curriculum Development (SLO), 2001.