@book { Wenigerschlechtentscheiden,
    title = "Weniger schlecht entscheiden",
    author = "Annika {Serfass} and Doris {Schäfer}",
    year = "2021",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1219156"
}