1. Biological Education in American Secondary Schools. Biological Science Curriculum Study Bulletin No. 1, American Institute of Biological Science, 2000 P Street, Washington, D.C., 1961.
2. The process approach of the AAAS commission on science education
3. Educational research related to science instruction for the elementary and junior high school: A review and commentary
4. Science Education in the Schools of the United States. Report of the National Science Foundation to the Subcommittee on Science, Research, and Development of the Committee on Science and Astronautics, U. S. House of Representatives, Eighty-ninth Congress, First Session, Serial D. U. S. Government Printing Office, Washington, 1965.
5. A Digest of Investigations in the Teaching of Science, P. Blakiston's Son & Co., Inc., Philadelphia, 1926, 341 p.