@book { SierraLeoneattheEndoftheTwentiethCentury,
    title = "Sierra Leone at the End of the Twentieth Century",
    author = "Earl {Conteh-Morgan} and Mac {Dixon-Fyle}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1089174"
}