@book { PiagetunddieErziehungswissenschaftheute,
    title = "Piaget und die Erziehungswissenschaft heute",
    author = "Dieter {Katzenbach} and Olaf {Steenbuck}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089393"
}