Ebel, R. L. (1965). Measuring educational achievement. Prentice-Hall.
Cita Chicago (17th ed.)Ebel, Robert L. Measuring Educational Achievement. Englewood Cliffs, N.J: Prentice-Hall, 1965.
Cita MLA (9th ed.)Ebel, Robert L. Measuring Educational Achievement. Prentice-Hall, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.