Day, E. J. (1932). The development of language in twins: I. A comparison of twins and single children. Child Development, 3(3), 179-199. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)
Day, E. J. (1932). The development of language in twins: I. A comparison of twins and single children. Child Development, 3(3), 179-199. [FULLTEXT]