Koerrenz, R., & Engelmann, S. (2019). Forgotten Pedagogues of German Education: A History of Alternative Education (1st ed. 2019.). Springer International Publishing : Imprint: Palgrave Pivot. https://doi.org/10.1007/978-3-030-29570-7
Παραπομπή σε μορφή Chicago (17η εκδ.)Koerrenz, Ralf, και Sebastian Engelmann. Forgotten Pedagogues of German Education: A History of Alternative Education. 1st ed. 2019. Cham: Springer International Publishing : Imprint: Palgrave Pivot, 2019. https://doi.org/10.1007/978-3-030-29570-7.
Παραπομπή σε μορφή MLA (8th εκδ.)Koerrenz, Ralf, και Sebastian Engelmann. Forgotten Pedagogues of German Education: A History of Alternative Education. 1st ed. 2019. Springer International Publishing : Imprint: Palgrave Pivot, 2019. https://doi.org/10.1007/978-3-030-29570-7.
