1. Fonología Española;Alarcos Llorach,1950
2. Imitation in language development: if, when and why;Bloom;Cogn. Psych.,1975
3. Repetition in human development;Bower;Merrill-Palmer Quarterly,1974
4. On specifying a system for transcribing consonants in child language: a working paper with examples from American English and Mexican Spanish;Bush,1973
5. A phonetic study of babbling;Cruttenden;Brit. J. of Disorders of Communication,1970