Ellis, R. (1994). The Study of Second Language Acquisition. New York: Oxford University Press.
This book serves as a comprehensive and accessible
introduction to second language acquisition research and as a reference
book for this field. The first section outlines a general framework
for the study of second language acquisition. Subsequent sections
provide a general description of learner language, account for the
role of the linguistic environment, examine the learners internal
mechanisms, explore individual differences in language learning, and
review the expanding research on classroom second language acquisition.