@book { HkelanleitungWichtelinMuffin,
    title = "Häkelanleitung Wichtelin Muffin",
    author = "Iris {Eigenbrodt}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1488936"
}