1. Baldwin, J. M. (1895). Mental development in the child and the race: Methods and processes. New York: Macmillan.
2. Bates, E. (1979). The emergence of symbols: Cognition and communication in infancy. New York: Academic.
3. Bateson, M. C. (1971). The interpersonal context of infant vocalization. In Quarterly progress report of the research laboratory of electronics, 100 (pp. 170–176). Boston: Massachusetts Institute of Technology.
4. Bateson, M. C. (1979). The epigenesis of conversational interaction: A personal account of research development. In M. Bullowa (Ed.), Before speech: The beginning of human communication (pp. 63–77). London: Cambridge University Press.
5. Bernstein, N. (1967). Coordination and regulation of movements. New York: Pergamon.