APA-čujuhus (7. p.)
Roberts , E. . V. (1964). Writing themes about literature. Prentice Hall.
Chicago-čujuhus (17. p.)
Roberts , Edgar V. Writing Themes About Literature. Englewood Cliffs, New Jersey: Prentice Hall, 1964.
MLA-čujuhus (9. p.)
Roberts , Edgar V. Writing Themes About Literature. Prentice Hall, 1964.
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