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 learner’s internal mechanisms, explore individual differences in language learning, and review the expanding research on classroom second language acquisition.