@book { HighSeasSammelband2in1,
    title = "High Seas Sammelband - 2 in 1",
    author = "Lisa {Summer} and Eva {Baumann}",
    year = "2020",
    publisher = "Summer Books",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/994314"
}