@book { VermisstindenkanadischenRockies,
    title = "Vermisst in den kanadischen Rockies",
    author = "Nicole Franziska {Horn}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1355396"
}