Irwin, O. C. (1948). Infant speech: Speech sound development of sibling and only children. Journal of Experimental Psychology, 38, 600-602. doi:10.1037/h0061195. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)
Irwin, O. C. (1948). Infant speech: Speech sound development of sibling and only children. Journal of Experimental Psychology, 38, 600-602. doi:10.1037/h0061195. [FULLTEXT]