SPIEGEL, M. (1972). THEORY & PROBLEMS OF STATISTICS. MC GRAW HILL PUBLICATION.
Cita Chicago (17th ed.)SPIEGEL, M.R. THEORY & PROBLEMS OF STATISTICS. New York: MC GRAW HILL PUBLICATION, 1972.
Cita MLA (9th ed.)SPIEGEL, M.R. THEORY & PROBLEMS OF STATISTICS. MC GRAW HILL PUBLICATION, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.