@book { EinfachfotografierenmitJennyBasti,
    title = "Einfach fotografieren mit Jenny & Basti",
    author = "Jenny & Sebastian {Ritter}",
    year = "2021",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/993671"
}