Eastman, P.D. (1961). Go dog go. New York: Random House.
2.
Ellis Weismer, S., Murray-Branch, J., & Miller, J. (1993). Comparison of two methods for promoting vocabulary in late talkers. Journal of Speech and Hearing Research, 36, 1037-1050.
3.
Fenson, L., Dale, P.S., Reznick, J.S., Bates, E., Thal, D.J., Bates, E., Hartung, J., Pethick, S.J., & Reilly, J.S. (1993). MacArthur Communicative Development Inventories . San Diego, CA: Singular.
4.
Fenson, L., Dale, P.S., Reznick, J.S., Bates, E., Thal, D.J., & Pethick, S.J. (1994). Variability in early communication development . Monographs of the Society for Research in Child Language Development, 59(5), 1-173.
5.
Girolametto, L., Pearce, R., & Weitzman, E. (1996). Interactive focused stimulation for toddlers with expressive language delays. Journal of Speech and Hearing Research, 39, 1274-1283.
6.
Lahey, M. (1988). Language disorders and language development. New York: MacMillan.
7.
Lederer, S.H. (2002). Efficacy of parent-child language group intervention for late talking toddlers. Infant-Toddler Intervention, 11, 223-235.
8.
Leonard, L.B., Schwartz, R.G., Chapman, K., Rowan, L.E., Prelock, P.A., Terrel, B., Weiss, A., & Messick, C. (1982). Early lexical acquisition in children with specific language impairment. Journal of Speech and Hearing Research , 25, 554-563.
9.
Nelson, K. (1973). Structure and strategy in learning to talk. Monographs of the Society for Research in Child Development, 38(1-2), 1-135.
10.
Owens, R.E. (1996). Language development. Boston : Allyn & Bacon.
11.
Paul, R. (2001). Language disorders: Infancy through adolescence . New York: Mosby.
12.
Rescorla, L. (1989). The Language Development Survey: A screening tool for delayed language in toddlers. Journal of Speech and Hearing Disorders, 54, 587-599.
13.
Rescorla, L., Alley, A., & Christine, J.B. (2001). Word frequencies in toddlers' lexicons. Journal of Speech, Language, and Hearing Research , 44, 598-609.
14.
Schwartz, R., & Leonard, L. (1982). Do children pick and choose? An examination of phonological selection and avoidance in early lexical acquisition. Journal of Child Language, 9, 319-336.
15.
Stoel-Gammon, C. (1985). Phonetic inventories, 15-24 months: A longitudinal study. Journal of Speech and Hearing Research, 28, 505 -512.
16.
Stoel-Gammon, C. (1998). Sounds and words in early language acquisition . In R. Paul (Ed.), Exploring the speech-language connection (pp. 25-52). Baltimore: Paul H. Brookes.
17.
Whitehurst, G., Fischel, J., Lonigan, C., Valdez-Menchaca, M., Arnold, D., & Smith, M. (1991). Treatment of early expressive language delay: If, when, and how. Topics in Language Disorders, 11 (3), 55-68.
18.
Wilcox, J., Kouri, T., & Caswell, S. (1991). Early language intervention: A comparison of classroom and individual treatment. American Journal of Speech-Language Pathology, 1, 49-62.
19.
Yoder, P., Kaiser, A., & Alpert, C. (1991). An exploratory study of the interaction between language teaching methods and child characteristics. Journal of Speech-Language-Hearing Research, 34, 155-167.