Michaels, B. (1995). The gray beginning (First edition.). HarperPaperbacks.
Cita Chicago (17th ed.)Michaels, Barbara. The Gray Beginning. First edition. New York: HarperPaperbacks, 1995.
Cita MLA (9th ed.)Michaels, Barbara. The Gray Beginning. First edition. HarperPaperbacks, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.