APA-čujuhus (7. p.)
Snow C. P. (1968). The sleep of reason. Charles scribner's sons.
Chicago-čujuhus (17. p.)
Snow C. P. The Sleep of Reason. New York: Charles scribner's sons, 1968.
MLA-čujuhus (9. p.)
Snow C. P. The Sleep of Reason. Charles scribner's sons, 1968.
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