Groeling, D. T. (1950). Taking a hand in international relations. Woman's Press.
Lua i Stíl Chicago (17ú heag.)Groeling, Dorothy Trautwein. Taking a Hand in International Relations. New York: Woman's Press, 1950.
Lua MLA (8ú heag.)Groeling, Dorothy Trautwein. Taking a Hand in International Relations. Woman's Press, 1950.
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