@book { DerStartindieLandschaftsfotografie,
    title = "Der Start in die Landschaftsfotografie",
    subtitle = "Das Geheimnis atemberaubender Bilder. Verständlich erklärt - für Anfänger geeignet",
    author = "David {Köster}",
    year = "2019",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/458126"
}