Gulick, E. V. (1967). Europe's classical balance of power: A case history of te theory and practice of one of the great concepts of European statecraft. Norton Library.
Чикаго стиль цитування (17-те видання)Gulick, Edward Vose. Europe's Classical Balance of Power: A Case History of Te Theory and Practice of One of the Great Concepts of European Statecraft. New York: Norton Library, 1967.
Стиль цитування MLA (9-ме видання)Gulick, Edward Vose. Europe's Classical Balance of Power: A Case History of Te Theory and Practice of One of the Great Concepts of European Statecraft. Norton Library, 1967.
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