Albacete, M.L. (1997). Apoya enfatizar la enseñanza de inglés. 
     El Nuevo Día (March) 23. 

Alexander, P.A., Schallet, D.L. &Hare, V.C. (1991). Coming to terms: 
     How researchers in learning and literacy talk about knowledge. 
     Review of Educational Research. 61 (3). 3 15-343. 

Bain, B. (1974). Bilingualism and cognition: Toward a general theory. 
     In S. Carey (Ed.), Bilingualism, biculturalism and education. 
     Edmonton: University of Alberta. 

Bain, B., & Yu, A. (1980). Cognitive consequences of raising children 
     bilingually: One Parent, one language. Canadian -journal of Psychology 
     34. 304-313. 

Ben-Zeev, S. (1977). The influence of Bilingualism on cognitive strategy and 
     cognitive development. Children Develolpment 48. 1009-1018. 

Brown, H.D. (1994). Principlesof language learning and teaching. (3ed.). 
     Englewood Cliffs, NJ: Prentice Hall Regents. 

Brown, R. (1973). A first language: The early stages. Cambridge, MA: 
     Harvard University Press. 

Collier, V.P. (1988). The effect of age on acquisition of a second language for 
     school. Forum, 2

Cummins, J. (1978). Bilingualism and the development of metalinguistic 
     awareness. Journal of Cross-Cultural Psychology. 9 (2), 131-149. 

Cummins, J. & Gulutson, M. (1974). Some effects of Bilingualism on 
     cognitive functioning. In S. Carey (Ed.), Bilingualism, biculturalism, 
     and education. Edmonton: University of Alberta. 

Duncan, S. & De Avila, Ed. (1979). Bilingual and cognition: Some recent findings. 
     NABE Journal 4, 15-50. 

Hakuta, K. & Pease Alvarez, L. (1992). Enriching our views of Bilingualism and 
     bilingual education. Educational researcher. 21, 4-6. 

Hakuta, K. (1990a). Language and cognition in bilingual children. In Padilla, A. M., 
     Fairchild, H.H., Valadez, C.M. (Eds.), Bilingual Education: Issues and Stratepies
     Newbury Park, CA: Sage Publications. 

Hakuta, K. (1990b). Bilingualism and bilingual education: A research perspective. 
     NCBE Focus: Occasional Papers in Bilingual Education. Number 1, Spring 1990. 

Hakuta, K. (1986). Mirror of language: The debate of Bilingualism. New York: Basic 

Ianco-Worral, A. (1972). Bilingualism and cognitive development. Child Development
     43, 1390-1400. 

Ives, J. (1979). Word Identification Techniques. Boston: Houghton Mifflin. 

Krashen, S.D. (1991). Bilingual education. A focus on current research. 
     NCBE Focus: Occasional Papers in Bilingual Education. 3, 

Krashen, S.D. (1995b). The input hypothesis: Issues and implications. New York: 

Lambert, W.E., & Tucker, G.R. (1972). Bilingual education of students: The St. 
     Lambert Experiment. Rowley, Mass: Newburry House. 

Liedtke, W. & Nelson, L. (1968). Concept formation in Bilingualism. Alberta Journal of 
     Educational Research Quarterly. 14, 225-232. 

Lladó-Torres, N. (1984). Puerto Rican student attitudes toward English as a second 
     language. Educational Research Quarterly. 8 (4), 92-102. 

Lloréns, W. (1976). La enseñanza de idiomas en Puerto Rico 
     (Language Teaching in Puerto Rico). Yelmo, 30, 41-42. 

Moraes, M. (1996). Bilingual education: A dialogue with the Bakhtin Circle 
     Albany, NY: State University of New York Press. 

Peal, B., & Lambert, W. (1962). The relation of Bilingualism to intelligence. 
     Psychological Monographs: General and Applied. 76, (27) 1-23. 

Skutnabb-Kangas,T(1981). Bilingualism of not: The education of minorities. Bodmin, 
     Cornwall: Robert Hartnoll Ltd. 

Soto, L.D. (1997) Language, culture, and power: Bilingual families and the struggle for  
     quality education. Albany, NY: State University of New York Press. 

Torrance, E. Wu, J., & Alliotti, N. (1970). Creating functioning of monolingual and 
     bilingual children in Singapore. Journal of Educational Psychology, 61, 72-75. 

Vygotsky, L.S. (1962). Thought and language. Cambridge, MA: MT Press 

Walqui, A. (1989). A translation and interpretation curriculum high school students. Santa
     Cruz, CA: The Bilingual Research Group, University of California, Santa Cruz.