CronbachL. J.Course Improvement Through Evaluation. Teacher's College Record, 1963, 64, 672-683.
2.
CronbachL. J.RajartnamN.GleserG. C.Theory of Generalizability: A Liberalization of Reliability Theory. British Journal of Statistical Psychology, 1963, 16, 137-163.
3.
LordF. M.Sampling Fluctuations Resulting from the Sampling of Test Items, Psychometrika, 1955, 20, 1-23.
4.
LordF. M.Estimating Item Norms by Item Sampling. Educational and Psychological Measurement, 1962, 22, 259-268.
5.
LordF. M.Item Sampling In Test Theory and In Research Design. Educational Testing Service, RB–65–22, June, 1965.