@book { FeedbackinLehrundLernprozessen,
    title = "Feedback in Lehr- und Lernprozessen",
    author = "Alexander {Weishahn}",
    year = "2019",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/496207"
}