Nunnally, J. C. (1978). Psychometric theory (Second edition.). McGraw-Hill.
Cita Chicago (17th ed.)Nunnally, Jum C. Psychometric Theory. Second edition. New York: McGraw-Hill, 1978.
Cita MLA (8th ed.)Nunnally, Jum C. Psychometric Theory. Second edition. McGraw-Hill, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.