@book { Blutzuckerrunterin4Wochen,
    title = "Blutzucker runter in 4 Wochen",
    author = "Dipl. oec. troph. Cora {Wetzstein}",
    year = "2024",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1506046"
}