@book { VerbraucherrechtinFllen,
    title = "Verbraucherrecht in Fällen",
    author = "Lovis Maxim {Wambach}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1098131"
}