@book { Ponnamal,
    title = "Ponnamal",
    author = "Amy {Carmichael} and Erika {Wuttke} and Heinrich {Töws}",
    year = "2024",
    publisher = "CMV, Bielefeld",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1441070"
}