@book { LesAffairestrangresautempsdeRichelieu,
    title = "Les Affaires étrangères au temps de Richelieu",
    subtitle = "Le secrétariat d’État, les agents diplomatiques (1624-1642)",
    author = "Madeleine {Haehl}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1100712"
}