@book { DieFahrtenderWikingerSechsAbenteuer,
    title = "Die Fahrten der Wikinger: Sechs Abenteuer",
    author = "Alfred {Bekker}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/977868"
}