1. On the use of factor analysis as a research tool;Benson;Journal of Vocational Education Research,1998
2. Alternative ways of assessing model fit;Browne,1993
3. Feedback on Instruction: The Relationship between Student Verbal Comments and Student Ratings, Student, Instructor and Course Characteristics;Fresko,2003
4. Factor Analysis;Gorsuch,1983
5. An Introduction to Multilevel Modeling Techniques;Heck,2000