1. Apps J. (1981). The adult learner on campus. Chicago IL: Follett.
2. Arnkoff D. & Smith R. (1988). Cognitive processes in test anxiety: An analysis of two assessment procedures in actual test. Cognitive Therapy and Research 12 425-439.
3. Astin A. (1975). Preventing students from dropping out. San Francisco CA: Jossey-Bass.
4. Bagoon C. (1988). Assessing a conceptual model for the treatment of test anxiety: Contributions of model components to the prediction of test anxiety and test performance. Doctoral dissertation University of Maryland 1988. Dissertation Abstracts International 50 DA8827036.
5. Bean J. & Metzner B. (1985). A conceptual model of non-traditional undergraduate student attrition. Review of Educational Research 55 485-540.