McCoy, N. H. (1964). The theory of rings. The Macmillan Company.
Cita Chicago (17th ed.)McCoy, Neal H. The Theory of Rings. New York: The Macmillan Company, 1964.
Cita MLA (9th ed.)McCoy, Neal H. The Theory of Rings. The Macmillan Company, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.