TY  - BOOK
AU  - Gass,Susan M.
AU  - Selinker,Larry
TI  - Second language acquisition: an introductory course 
SN  - 9780805854978  
AV  - P118.2 .S424 2008
PY  - 2008///
CY  - New York
PB  - Routledge/Taylor and Francis Group
KW  - Language
KW  - Second language
KW  - acquisition
KW  -  language acquisition
N1  - Includes bibliographical references and indexes
ER  -