1. Der facetten-ansatz bvei der entwicklung einer unterrichststheorie;Bar-On,1976
2. Analyzing teaching behavior;Flanders Ned,1970
3. Teaching and learning in studies of teacher effectiveness;Fordham;Studies in Educational Research,1982
4. The teacher's personality and characteristics;Getzels,1963
5. Introduction to facet design and analysis;Guttman,1957