Zion, J. S. (1985). Prairie dawn's Purple Book: Open Sesame - Stage D. Oxford University Press.
Chicago-čujuhus (17. p.)Zion, Jane S. Prairie Dawn's Purple Book: Open Sesame - Stage D. New York: Oxford University Press, 1985.
MLA-čujuhus (9. p.)Zion, Jane S. Prairie Dawn's Purple Book: Open Sesame - Stage D. Oxford University Press, 1985.
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