References
- Buros , O. K. 1953 . The Fourth Mental Measurements Yearbook , The Gryphon Press : New Jersey .
- Crowder , N. A. 1960 . The Arithmetic of Computers , Garden City, N.Y. : Doubleday .
- Siegal , S. 1956 . Nonparametric Statistics , New York : McGraw‐Hill .
- Winer , B. J. 1962 . Statistical Principles in Experimental Design , New York : McGraw‐Hill .