- Campbell, D.T.; Stanley, J.C., Experimental and Quasi-Experimental Designs for Research, Rand McNally, Chicago 1963.
- Grobman, H., “Curriculum Development and Evaluation,” Journal of Educational Research, 64:436–442, 1971.
- Guilford, J.P., “Apparatus Test-SEP-I,” in French, J.W.; Ekstrom, R.B.; Price, L.A. (eds.), Kit of Reference Tests for Cognitive Factors, Educational Testing Service, Princeton, New Jersey, 1963.
- Lunneborg, P.W.; Lunneborg, C.E., “Effects of Environmental Education on Teacher Values,” Journal of Environmental Education, 4(no. 2): 48–50, 1972.
- Piaget, J., The Child's Conception of Physical Causality, Kegan Paul, London, 1930.
- Raven Colored Progressive Matrices Test, Form 1947, Psychological Corporation, New York, 1963.
- Ryan, R., “The Northwest Environmental Education Center, Journal of Environmental Education, 3(no. 2): 51–55, 1971.
- Schoenfeld, C., “Toward a National Strategy for Environmental Education,” Journal of Educational Research, 64:5–11, 1970.
- Udall, S.L., “Ecological Balance,” Childhood Education, 45:2–5, 1968.
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