Research on Bilingual Children Surveyed. 

 - Virginia-US  :   The Linguistic Reporter,   1973. 
 - p. 2 
 - Irregular 
 - Vol. 15 no. 7 (Oct. 1973) 
 - The Linguistic Reporter A Newsletter in Applied Linguistics ;   no. 7 .
 - Center fo Applied Linguistics. .
<br/><br/><br/>Inglés.