Lua APA (7ú heag.)

HARTMANN, F. H. (1968). The relations of nations.-- Ed.3. The Macmillan.

Lua i Stíl Chicago (17ú heag.)

HARTMANN, Frederick H. The Relations of Nations.-- Ed.3. New York: The Macmillan, 1968.

Lua MLA (9ú heag.)

HARTMANN, Frederick H. The Relations of Nations.-- Ed.3. The Macmillan, 1968.

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