Greefrath, G., & Vorhölter, K. (2016). Teaching and Learning Mathematical Modelling: Approaches and Developments from German Speaking Countries. Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-45004-9
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Greefrath, Gilbert, و Katrin Vorhölter. Teaching and Learning Mathematical Modelling: Approaches and Developments from German Speaking Countries. Cham: Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-45004-9.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Greefrath, Gilbert, و Katrin Vorhölter. Teaching and Learning Mathematical Modelling: Approaches and Developments from German Speaking Countries. Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-45004-9.