@book { HistorischeundrechtlicheAspektedesReligionsunterrichts,
    title = "Historische und rechtliche Aspekte des Religionsunterrichts",
    author = "Alfred {Rinnerthaler}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097479"
}