@book { AugustinusvonHippoSermonesadpopulum,
    title = "Augustinus von Hippo- «Sermones ad populum»",
    author = "Hubertus {Drobner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135713"
}