1. Self Assessment
2. Ebel R. L. Ertentiok of Educational Measurement. Prentice-Hall, Englewood Cliffs 1972; 622
3. Gronlund N. E. Constructing Achievement Tests. Prentice-Hall, Englewood Cliffs 1968; 118
4. Gronlund N. E. Measurement and Evaluation in Teaching. Macmillan, New York 1976; 590