@book { IchhelfemirselbstBluthochdruck,
    title = "Ich helfe mir selbst - Bluthochdruck",
    author = "Pepe {Peschel}",
    year = "2020",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/514674"
}