Setton, k. M., & Winkler, H. R. (1954). Great problems in European civilization. Prentice-Hall.
Chicago-čujuhus (17. p.)Setton, kenneth M., juo Henry R. Winkler. Great Problems in European Civilization. New York: Prentice-Hall, 1954.
MLA-čujuhus (9. p.)Setton, kenneth M., juo Henry R. Winkler. Great Problems in European Civilization. Prentice-Hall, 1954.
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