Perkins, D. (1952). The American approach to foreing policy. Harvard University.
Čikaški stil citiranja (17. izdanje)Perkins, Dexter. The American Approach to Foreing Policy. Cambridge, Massachussetts: Harvard University, 1952.
MLA način citiranja (9. izdanje)Perkins, Dexter. The American Approach to Foreing Policy. Harvard University, 1952.
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