1. American Association for the Advancement of Science. Science-A Process Approach. Exercise pamphlets, Parts A-F. Washington, D. C.: AAAS, 1967.
2. American Association for the Advancement of Science. Science-A Process Approach. Commentary for teachers. Washington, D. C.: AAAS, 1970.
3. SPAT-Science process activities test. Norfolk, Va.: Old Dominion University, 1973.
4. Handbook of science process activities. Worthington, Ohio: Education Associates, Inc., 1974.
5. & Experimental and quasi-experimental designs for research on teaching. In (Ed.), Handbook of research on teaching. Chicago: Rand McNally and Co., 1963, chap. 5.