@book { IchsagenichtsistdeinBesitz,
    title = "Ich sage, nichts ist dein Besitz",
    author = "Drea {Summer}",
    year = "2020",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1309009"
}