(2003) Foundations of bilingual education and bilingualism. Clevedon: Multilingual Matters.
Cummins, J
(1976) The influence of bilingualism on cognitive growth. Working Papers on Bilingualism, 91, 1–43.
García, Ofelia
(2009) Bilingual education in the XXIst century: a global perspective. Wiley: Blackwell.
Hornberger, Nancy
(2002) Multilingual language policies and the continua of biliteracy: an ecological approach. Language Policy, 11, 27–51.
Hornberger, Nancy
(2004) The continua of biliteracy and the bilingual educator: educational linguistics in practice. International Journal of Bilingual Education and Bilingualism, 7(2 & 3), 155–171.