@book { CovenantKeeper,
    title = "«Covenant Keeper»",
    author = "Gloria {Ladson-Billings} and William {Tate}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-1840-1",
    url = "https://www.peterlang.com/document/1051706"
}