TY  - BOOK
AU  - Gass, Susan M
AU  - Selinker, Larry
TI  - Second language acquisition: introductory course
SN  - 9780805854985
U1  - 418 
PY  - 1994///-R2008
CY  - New York
PB  - Routledge
N1  - includes reference, author and subject index
ER  -