@book { AnEcclesiologicalExplorationoftheFourMarksoftheChurch,
    title = "An Ecclesiological Exploration of the Four Marks of the Church",
    author = "Philip Chika {Omenukwa}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04074-6",
    url = "https://www.peterlang.com/document/1048265"
}