Cohen, R. J., & Swerdlik, M. E. (2005). Psychological testing and assessment: An introduction to tests and measurement (6th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Cohen, Ronald Jay, agus Mark E. Swerdlik. Psychological Testing and Assessment: An Introduction to Tests and Measurement. 6th ed. Mountain View, Calif: McGraw-Hill, 2005.
Lua MLA (9ú heag.)Cohen, Ronald Jay, agus Mark E. Swerdlik. Psychological Testing and Assessment: An Introduction to Tests and Measurement. 6th ed. McGraw-Hill, 2005.
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