Thorndike, R. L., & Hagen, E. P. (1977). Measurement and evaluation in psychology and education (4th ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Thorndike, Robert Ladd, agus Elizabeth P. Hagen. Measurement and Evaluation in Psychology and Education. 4th ed. New York: Wiley, 1977.
Lua MLA (9ú heag.)Thorndike, Robert Ladd, agus Elizabeth P. Hagen. Measurement and Evaluation in Psychology and Education. 4th ed. Wiley, 1977.
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