@book { NaturalLawandPoliticalRealismintheHistoryofPoliticalThought,
    title = "Natural Law and Political Realism in the History of Political Thought",
    subtitle = "Volume I: From the Sophists to Machiavelli",
    author = "R.W. {Dyson}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1100384"
}