Cita APA (7th ed.)
Spiegel, M. R., & Stephens, L. J. (1992). Schaum's outline of theory and problems of statistics: SI units (2nd ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Spiegel, Murray R., i Larry J. Stephens. Schaum's Outline of Theory and Problems of Statistics: SI Units. 2nd ed. New York: McGraw-Hill, 1992.
Cita MLA (9th ed.)
Spiegel, Murray R., i Larry J. Stephens. Schaum's Outline of Theory and Problems of Statistics: SI Units. 2nd ed. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.