@book { WievielAngstertrgstdu,
    title = "Wie viel Angst erträgst du?",
    author = "Lena {Viajera}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1021315"
}