Root, E., & Butler, N. M. (1920). Problems Confronting the Carnegie Endowment for International Peace Statements.
Cita Chicago Style (17a ed.)Root, Elihu, y N. M. Butler. Problems Confronting the Carnegie Endowment for International Peace Statements. 1920.
Cita MLA (9a ed.)Root, Elihu, y N. M. Butler. Problems Confronting the Carnegie Endowment for International Peace Statements. 1920.
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