The sound laws of child language and their place in general phonology
Jakobson, R. (1971)., The sound laws of child language and their place in general phonology, in A. Bar-Adon & W. F. Leopold (eds.), Child language, Englewood Cliffs, Prentice-Hall, pp. 75-82.
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in: Principes de phonologie, Paris : Klincksieck