West, M. (1991). The ringmaster. Heinemann, HarperPaperbacks.
Cita Chicago (17th ed.)West, Morris. The Ringmaster. London : New York: Heinemann, HarperPaperbacks, 1991.
Cita MLA (8th ed.)West, Morris. The Ringmaster. Heinemann, HarperPaperbacks, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.