@book { SamuelJohnsonofYorubaland18461901,
    title = "Samuel Johnson of Yorubaland, 1846-1901",
    author = "Wolfgang-Ulrich {Fischer}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/978-3-0353-0481-7",
    url = "https://www.peterlang.com/document/1043672"
}