Perkins, G. B. (1990). The American tradition in literature (7th ed.). McGraw-Hill.
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Chicago-čujuhus (17. p.)
Perkins, George B. The American Tradition in Literature. 7th ed. New York: McGraw-Hill, 1990.
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MLA-čujuhus (9. p.)
Perkins, George B. The American Tradition in Literature. 7th ed. McGraw-Hill, 1990.
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