@book { MuhammadandtheFormationofSacrifice,
    title = "Muhammad and the Formation of Sacrifice",
    author = "Gerd Marie {Adna}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04637-3",
    url = "https://www.peterlang.com/document/1046610"
}