@book { EinfhrungindieUnterrichtswissenschaft,
    title = "Einführung in die Unterrichtswissenschaft",
    author = "Jörg {Petersen} and Gerhard {Priesemann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1080433"
}