@book { EinYankeeanKaiserWilhelmsHof,
    title = "Ein Yankee an Kaiser Wilhelms Hof",
    author = "Falko {Hennig}",
    year = "2023",
    publisher = "Omnino Verlag",
    address = "Berlin, Deutschland",
    url = "https://shop.omnino-verlag.de/document/1381658"
}