Higgins, R. (2009). Themes and theories: Selected essays, speeches, and writings in international law. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Higgins, Rosalyn. Themes and Theories: Selected Essays, Speeches, and Writings in International Law. Oxford ; New York: Oxford University Press, 2009.
Lua MLA (8ú heag.)Higgins, Rosalyn. Themes and Theories: Selected Essays, Speeches, and Writings in International Law. Oxford University Press, 2009.
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