@book { GodSpeakstoUs,
    title = "God Speaks to Us",
    author = "Ralf K. {Wüstenberg} and Jens {Zimmermann}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02309-1",
    url = "https://www.peterlang.com/document/1047435"
}