Burtt, H. E.Principles of employment psychology , (Revised ed.). New York: Harper , 1942.
2.
Cowdery, K. M.Measurement of professional attitudes: Differences between lawyers, physicians and engineers. Journal of Personnel Research, 1926, 5, 131-141 .
3.
England, G. W.Development and use of weighted application blanks. Dubuque, Iowa: Wm. C. Brown Company, 1961.
4.
Stead, W. H. and Shartle, C. L.Occupational counseling techniques: Their development and application. New York: American Book Company, 1940.
5.
Strong, E. K., Jr.An interest test for personnel managers. Journal of Personnel Research, 1926 , 5, 194 -203.
