@book { NaturalLawConstitutionalismReasonofStateandWar,
    title = "Natural Law, Constitutionalism, Reason of State, and War",
    author = "J.A. {Fernandez-Santamaria}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1100325"
}