-
1ανά Sax, Gilbert
Έκδοση 1974Second ed. published in 1980 under title Principles of educational and psychological measurement and evaluation.Βιβλίο -
2ανά Sax, Gilbert
Έκδοση 1980First ed. published in 1974 under title: Principles of educational measurement and evaluation.
Includes index.Βιβλίο -
3