Hughan, J. W. (1923). A study of international government. T.Y. Crowell company.
Lua i Stíl Chicago (17ú heag.)Hughan, Jessie Wallace. A Study of International Government. New York: T.Y. Crowell company, 1923.
Lua MLA (8ú heag.)Hughan, Jessie Wallace. A Study of International Government. T.Y. Crowell company, 1923.
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