@book { SpiesandDiplomats,
    title = "Spies and Diplomats",
    subtitle = "Spanish Intelligence Service in the Eighteenth Century",
    author = "Cezary {Taracha}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17783",
    url = "https://www.peterlang.com/document/1117882"
}