Spiegel, M. R. (1999). Schaum's Outline of Theory and Problems of Statistics (3rd. ed.). McGraw-Hill Book Company.
Cita Chicago (17th ed.)Spiegel, Murray R. Schaum's Outline of Theory and Problems of Statistics. 3rd. ed. New Delhi: McGraw-Hill Book Company, 1999.
Cita MLA (9th ed.)Spiegel, Murray R. Schaum's Outline of Theory and Problems of Statistics. 3rd. ed. McGraw-Hill Book Company, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.