@book { AlliesorEnemies,
    title = "Allies or Enemies",
    subtitle = "Political relations between Spain and Great Britain during the reign of Ferdinand VII (1808–1833)",
    author = "Patrycia {Jakobczyk-Adamczyk}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02559-0",
    url = "https://www.peterlang.com/document/1046360"
}