Leopold, W. (1939). Speech development of a bilingual child. Vol I: Vocabulary growth in the first two years. New York: AMS Press. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)
Leopold, W. (1939). Speech development of a bilingual child. Vol I: Vocabulary growth in the first two years. New York: AMS Press. [FULLTEXT]