@book { FotokartenKreativeFotoaufgabenHundefotografie,
    title = "Fotokarten. Kreative Fotoaufgaben Hundefotografie",
    author = "Bettina {Dittmann}",
    year = "2022",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1182381"
}