Educational Testing Service, Directions for Administering and Scoring Cooperative School and College Ability Tests. Princeton, New Jersey: Educational Testing Service, 1957. (a) Educational Testing Service, Directions for Administering and Scoring Cooperative Sequential Tests of Educational Progress.
2.
Princeton, New Jersey: Educational Testing Service , 1957. (b) Educational Testing Service, SCAT-STEP Supplement, Test Performance in Urban Schools. Princeton, New Jersey: Educational Testing Service , 1963.
3.
Guilford, J. P. and Hoepfner, R.Structure-of-Intellect Factors and Their Tests. Los Angeles: University of Southern California, Reports from the Psychological Laboratory, No. , 361966 .
4.
Tenopyr, Mary L.A Factor-Analytic Study of Symbolic-Memory Abilities. Unpublished doctoral dissertation. University of Southern California, 1966.
