@book { ThePermanentCampaign,
    title = "The Permanent Campaign",
    author = "Greg {Elmer} and Ganaele {Langlois} and Fenwick {McKelvey}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1109149"
}