@book { DieWeltwarmeineGemeindeWillemAVissertHooft,
    title = "«Die Welt war meine Gemeinde»- Willem A. Visser ’t Hooft",
    author = "Filippo Maria {Giordano} and Stefano {Dell'Acqua}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6484-5",
    url = "https://www.peterlang.com/document/1053880"
}