References
- American Society for Engineering Education ECAC Committee on Analysis of Engineering Enrollment, Factors Influencing Engineering Enrollment (Washington, D. C.: American Society for Engineering Education, October, 1965).
- Engineering Student Attrition, (New York: Engineering Manpower Commission, April, 1963).
- Foecke, H. A. The Engineering Manpower Situation—Present and Future, (New York: Engineering Manpower Commission, July, 1962).
- Nichols, R. C. and Austin, A. W. Progress of the Merit Scholar: An Eight Year Follow-up NMSC Research Reports. No. 4, National Merit Scholarship Corporation, 1965, 18 pp.
- Walker, Helen J. and Lev, Joseph. Statistical Inference. (New York: Henry Holt and Company, 1953), pp. 156–157.