Bates, E., & MacWhinney, B.(1981).Second language acquisition from a functionalist perspective: Pragmatic, semantic and perceptual strategies.In H.Winitz(Ed.), Annals of the New York Academy of Sciences conference on native andforeign language acquisition (pp.190-214).New York, NY: New York Academy of Sciences.
Bates, E., & MacWhinney, B.(1989).Functionalism and the competition model.In B.MacWhinney& E.Bates (Eds.),Thecrosslinguistic study of sentence processing(pp.3-73).New York, NY: Cambridge University Press.