References
- Campbell, D. T. and Stanley, J.C., Experimental and Quasi-experimental Designs for Research Rand McNally, Chicago, Illinois, 1966.
- Engineering Student Attrition, Engineering Manpower Commission, New York, April, 1963.
- Foecke, H. A., The Engineering Manpower Situation-Present-and Future, Engineering Manpower Commission, New York, July 1962.
- Johnson, P. O. and Jackson, R. W. B., Modern Statistical Methods: Descriptive and Inductive, Rand McNally, Chicago, Illinois, 1959.
- Krumboltz, John D., “Behavioral Goals for Counseling,” Journal of Counseling Psychology, 13: 153–159, 1966.
- Lucas, John A., Faither, Gerald H., and Montgomery, James R., “Evaluating a Tutorial Program Containing Volunteer Subjects,” The Journal of Experimental Education, 36: 78–81, Spring, 1968.
- Peters, C. C. and Van Voorhis, W. R., Statistical Procedures and Their Mathematical Bases. McGraw-Hill, New York, 1940.
- Taylor, Ronald G., “Tutorial Services and Academic Success,” Journal of Educational Research, 62:(no. 5) 195, January, 1969.