Amster, Harriet, Development of Concept Formation in Children, Cooperative Research Project No. 2243 (Berkeley: The University of California, 1966), p. 79.
2.
Campbell, Donald T. and Julian C. Stanley, Experimental and Quasi-Experimental Designs for Research (Chicago: Rand McNally and Company, 1967), pp. 24–5.
Klausmeier, Herbert J., Strategies of Learning and Efficiency of Concept Attainment by Individuals and Groups, Contract with the U.S. Office of Education No. 1442 (Madison: The University of Wisconsin), pp. 1, 110.
6.
Smith, B. Othanel and others, “Analysis of Conceptual Ventures,”A Study of the Strategies of Teaching, Contract with the U.S. Office of Education No. 1640 (Urbana: The University of Illinois), pp. 93–108.
7.
Watkins, John G. and Stephen E. Farnum, Watkins-Farnum Performance Scale (Winona, Minnesota: Hal Leonard Music Inc., 1962).
8.
Weber, Fred, First Division Band Course, Book 1 (Rockville Center, New York: Belwin, Inc., 1968).