APA-čujuhus (7. p.)
Spiegel, S. L. (1988). At issue: Politics in the world arena. St. Martin's press.
Chicago-čujuhus (17. p.)
Spiegel, Steven L. At Issue: Politics in the World Arena. New York: St. Martin's press, 1988.
MLA-čujuhus (9. p.)
Spiegel, Steven L. At Issue: Politics in the World Arena. St. Martin's press, 1988.
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