1. Bastian, J. R. Response chaining in verbal transfer. Unpub. Ph.D. thesis, Univer. Minn., 1956.
2. Bousfield, W. A. The occurrence of clustering in the recall of randomly arranged associates. J. gen. Psychol., 1953, 49, 229–240.
3. Bousfield, W. A. The problem of meaning in verbal learning. In: Cofer, C. N. 1961.
4. Bousfield, W. A. & Cohen, B. H. General review of a program of research on associative clustering. In: Jenkins, J. J. 1955.
5. Bousfield, W. A., Cohen, B. H., & Whitmarsh, G. A. Verbal generaliza tion: A theoretical rationale and an experimental technique. Tech. Rep., #23, Contract Nonr. 631(00), Onr & Univer. Conn., 1958.