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2.
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3.
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4.
Guilford-Zimmerman Temperament Survey. Beverly Hills, California : The Sheridan Supply Company, 1949
5.
Jackson, B.W., and Guba, E.G. "The Need Structure of In-service Teachers: An Occupational Analysis ." School Review65: 176-192; 1957.
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Kaiser, H.F. "The Varimax Criterion for Analytic Rotation in Factor Analysis." Psychometrika, 22: 187-200; 1958.
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Palacios, J.R.A Validation Study of Selected Tests for Possible Use in Admission to Professional Education Sequences at Purdue University. Unpublished Ph.D. thesis, Purdue University, 1959.
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Stout, Ruth A.A Study of Admission and Retention Practices in College and University Programs for Teacher Education. Unpublished Ph.D. thesis, University of Minnesota, 1957.
9.
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