@book { MutterundSohnLiteraturQuickie,
    title = "Mutter und Sohn - Literatur-Quickie",
    author = "Rebecca  Clare {Sanger}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955201746",
    url = "https://m.dotbooks.de/document/209661"
}