@book { KircheGegenwartChristiinderWelt,
    title = "Kirche: Gegenwart Christi in der Welt",
    author = "Ruomin {Liu}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04470-6",
    url = "https://www.peterlang.com/document/1048579"
}