@book { Lapolitiquetrangre,
    title = "La politique étrangère",
    author = "Claude {Roosens} and Valérie {Rosoux} and Tanguy de {Wilde d'Estmael}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1097010"
}