Zion, J. S. (1985). Prairie dawn's Purple Book: Open Sesame - Stage D. Oxford University Press.
Cita Chicago (17th ed.)Zion, Jane S. Prairie Dawn's Purple Book: Open Sesame - Stage D. New York: Oxford University Press, 1985.
Cita MLA (9th ed.)Zion, Jane S. Prairie Dawn's Purple Book: Open Sesame - Stage D. Oxford University Press, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.