@book { DerIslamunddieGrundlagenderHerrschaft,
    title = "«Der Islam und die Grundlagen der Herrschaft»",
    author = "Hans-Georg {Ebert} and Assem {Hefny}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107349"
}