Bickley, C. (1983). Acoustic evidence for phonological development of vowels in young children. Speech Communication Group Working Papers, Research Laboratory of Electronics, M.I.T. 4. 111–24.
Bickley, C., Lindblom, B. & Roug, L. (1986). Acoustic measures of rhythm in infants' babbling. Paper presented at the Proceedings of the Twelfth International Congress on Acoustics, Toronto.
Buhr, R. D. (1980). The emergence of vowels in an infant. Journal of Speech and Hearing Research 23. 73–94.
Bullowa, M. (1979). Before Speech. Cambridge: C.U.P.
Cruttenden, A. (1970). A phonetic study of babbling. British Journal of Disorders of Communication 5. 110–17.
Foster, R. E., Connors, B. W. & Waxman, S. G. (1982). Rat optic nerve: electrophysiological, pharmacological and anatomical studies during development. Developmental Brain Research 3. 371–86.
Jakobson, R. (1941, 1968). Child language, aphasia and phonological universals. The Hague: Mouton.
Kent, R. D. & Bauer, H. R. (1985). Vocalizations of one-year-olds. Journal of Child Language 12. 491–526.
Kent, R. D. & Murray, A. D. (1982). Acoustic features of infant vocalic utterances at 3, 6 and 9 months. Journal of the Acoustic Society of America 72. 353–65.
Koopmans van Beinum, F. J. & van der Stell, J. M. (1986). Early stages in the development of speech movements. In Lindblom, B. & Zetterström, R. (eds), Precursors of early speech. New York: Stockton Press.
Lecours, A. R. (1975). Myelogenetic correlates of the development of speech and language. In Lenneberg, E. H. & Lenneberg, E. (eds), Foundation of language development: a multidisciplinary approach. Vol. 1. New York: Academic Press.
Lindblom, B. & Zetterström, R. (eds) (1986). Precursors of early speech. New York: Stockton Press.
Locke, J. L. (1983). Phonological acquisition and change. New York: Academic Press.
McCune, L. & Vihman, M. M. (1987). Vocal motor schemes. Mimeographed report.
Menn, L. (1978). Pattern, control and contrast in beginning speech: a case study in the development of word form and word function. Unpublished doctoral dissertation, Boston University.
Norberg, L. (1984). Utvecklingsbedömning av de åtta ‘jollerbarnen’. Mimeographed report available from the Department of Paediatrics, Child Surgery and Child Psychiatry, Karolinska Institute, Stockholm, Sweden.
Oller, D. K. (1980). The emergence of the sounds of speech in infancy. In Yeni-Komshian, G. H., Kavanagh, J. F. and Ferguson, C. A. (eds), Child Phonology, Vol. i. Production. New York: Academic Press.
Oller, D. K. (1981). Infant vocalizations: exploration and reflexivity. In Stark, R. (ed.), Language behaviour in infancy and early childhood. New York: Elsevier.
Oller, D. K. (1986). Metaphonology and infant vocalizations. In Lindblom, B. and Zetterström, R. (eds), Precursors of early speech. New York: Stockton Press.
Oller, D. K., Wieman, L. A., Doyle, W. J. & Ross, C. (1976). Infant babbling and speech. Journal of Child Language 3. 1–11.
Pike, K. L. (1943). Phonetics. Ann Arbor: University of Michigan press.
Rakic, P., Bourgeois, J. P., Eckenhoff, M. F., Zecevic, N. & Goldman-Rakic, C. S. (1986). Concurrent overproduction of synapses in diverse regions of the primate cerebral cortex. Science 232. 232–4.
Salus, P. H. & Salus, M. W. (1974). Developmental neurophysiology and phonological acquisition order. Language 50. 151–60.
Stark, R. E. (1980). Stages of speech development in the first year of life. In Yeni-Komshian, G. H., Kavanagh, J. F. & Ferguson, C. A. (eds), Child Phonology. Vol. 1. Production. New York: Academic Press.
Stark, R. E. (ed.) (1981). Language behavior in infancy and early childhood. New York: Elsevier.
van der Stelt, J. M. & Koopmans van Beinum, F. J. (1986). The onset of babbling related to gross motor development. In Lindblom, B. & Zetterström, R. (eds), Precursors of early speech. New York: Stockton Press.
Thelen, E. (1981). Rhythmical behavior in infancy: an ethological perspective. Developmental Psychology 17. 237–57.
Vihman, M. M. (1986). Individual differences in babbling and early speech: predicting to age three. In Lindblom, B. and Zetterström, R. (eds), Precursors of early speech. New York: Stockton Press.
Vihman, M. M., Macken, M. A., Miller, R., Simmons, H. & Miller, J. (1985). From babbling to speech: a reassessment of the continuity issue. Language 61. 397–445.
Whitaker, H. A. (1973). Comments on the innateness of language. In Shuy, R. (ed.), Some New Directions in Linguistics. Washington DC: Georgetown University Press.
Yeni-Komshian, G. H., Kavanagh, J. F. & Ferguson, C. F. (eds) (1980). Child phonology. Vol. 1. Production. New York: Academic Press.