1. Andrews, D. M. 1978. The interrelationship among the cognitive, affective, and behavioral domains in an outdoor environmental education program. Published doctorial dissertation, University of Maine.
2. Bateson, J. D. 1981. Changes in student-teacher perceptions following a residential outdoor program. Published doctorial dissertation, University of British Columbia, Canada.
3. Becker, W. E., and M. Watts, 1998. Teaching economics: What was, is, and could be. In W. E. Becker and M. Watts, eds. Teaching economics to undergraduates: Alternatives to chalk and talk. Cheltenham, England: Edward Elgar.
4. Buckles, S. 1998. Using cases as an effective active learning technique. In W. E. Becker and M. Watts, eds. Teaching economics to undergraduates: Alternatives to chalk and talk. Cheltenham, England: Edward Elgar.
5. Carter, J. L. 1993. A national priority: Providing quality field experiences for all students. The American Biology Teacher 55 (3): 140-43.