Hankes, Elmer J."New Development in Test Scoring Machines."Proceedings of 1952 Conf. Test ProblemPrinceton: Educational Testing Service (1954), 157 -159.
2.
Kuder, G. Frederic."A Comparative Study of Some Methods of Developing Occupational Keys."EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, XVII (1957), 105-114.
3.
Lindquist, E. F."The Iowa Electronic Test Pressing Equipment."Proceedings of 1953 Conf. Test ProblemPrinceton: Educational Testing Service (1954), 160 -168.
4.
Staugas, Leonard."A Rapid Method for Scoring Tests Punched in I.B.M. Cards."EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENTXIV , ( 1954), 101-105.