Ebel, R. L., & Frisbie, D. A. (1991). Essentials of educational measurement (5th ed.). Prentice-Hall.
Chicago-viite (17. p.)Ebel, Robert L., ja David A. Frisbie. Essentials of Educational Measurement. 5th ed. Englewood Cliffs, N.J: Prentice-Hall, 1991.
MLA-viite (9. p.)Ebel, Robert L., ja David A. Frisbie. Essentials of Educational Measurement. 5th ed. Prentice-Hall, 1991.
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