Steel, R. G. D., Torrie, J. H., & Dickey, D. A. (1997). Principles and procedures of statistics: A biometrical approach (3a. ed.). McGraw-Hill.
Cita Chicago (17th ed.)Steel, Robert G. D., James H. Torrie, i David A. Dickey. Principles and Procedures of Statistics: A Biometrical Approach. 3a. ed. Boston: McGraw-Hill, 1997.
Cita MLA (9th ed.)Steel, Robert G. D., et al. Principles and Procedures of Statistics: A Biometrical Approach. 3a. ed. McGraw-Hill, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.