AikenL. (1994). Psychological testing and assessment (8th ed.). Boston: Allyn and Bacon.
2.
AnastasiA. (1982). Psychological testing (5th ed.). New York: Macmillan.
3.
BinetA.SimonT. (1905a). Methodes nouvelles pour le diagnostic du niveau intellectuel des anormaux. Annee pyschologique, 11, 191–244.
4.
BinetA.SimonT. (1905b). Sur la necessite d'etablir un diagnostic scientifique des etats inferieurs de l'intelligence. Annee psychologique, 11, 162–190.
5.
BoyerC. B. (2000). Gauss, Karl Friedrich. Encyclopedia Americana Online. Grolier. Retrieved June 15, 2000, from the World Wide Web: http://ea.grolier.com.
6.
CohenR. J.SwerdlikM. E.PhillipsS. M. (1996). Psychological testing and assessment (3rd ed.). Mountain View, CA: Mayfield.
7.
DurostW. N. (1999). Intelligence. Encyclopedia Americana Online. Grolier. Retrieved June 15, 2000, from the World Wide Web: http://ea.grolier.com.
8.
FreemanF. S. (1962). Theory and practice of psychological testing (3rd ed.). New York: Holt, Rinehart, and Winston.
9.
MichellJ. (1990). An introduction to the logic of psychological measurement. Hillsdale, NJ: Erlbaum.