@inbook{ RAMOS_MADRID:135-156,

author = { ANA MARÍA RAMOS GARCÍA and DANIEL MADRID FERNÁNDEZ } ,

title = { Bilingualism and Competence in the Mother Tongue },

booktitle = { STUDIES IN BILINGUAL EDUCATION },

isbn = { 978-3-0343-0474-0 },

publisher = { Peter Lang },

pages = { 135 - 156 },

year = { 2011 },

}