Harley, B. (1996). The development of second language proficiency (1st. ed.). Cambridge, U.K.: Cambridge University.
Chicago Style CitationHarley, Birgit. The Development of Second Language Proficiency. 1st. ed. Cambridge, U.K.: Cambridge University, 1996.
MLA CitationHarley, Birgit. The Development of Second Language Proficiency. 1st. ed. Cambridge, U.K.: Cambridge University, 1996.
Warning: These citations may not always be 100% accurate.