Vygotsky, L. S., & Luria, A. (1929). The function and fate of egocentric speech. Proceedings of the Ninth International Congress of Psychology, 464-465. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)
Vygotsky, L. S., & Luria, A. (1929). The function and fate of egocentric speech. Proceedings of the Ninth International Congress of Psychology, 464-465. [FULLTEXT]