@book { PrintmedieninNicaragua,
    title = "Printmedien in Nicaragua",
    author = "Anna {Strohdorfer}",
    year = "2012",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842830035",
    url = "https://m.diplom.de/document/229202"
}