APA (7th ed.) Citation
ebrary, Inc, Leaver, B. L., & Shekhtman, B. (2002). Developing professional-level language proficiency. Cambridge University Press.
Chicago Style (17th ed.) Citation
ebrary, Inc, Betty Lou Leaver, and Boris Shekhtman. Developing Professional-level Language Proficiency. Cambridge ; New York, NY: Cambridge University Press, 2002.
MLA (9th ed.) Citation
ebrary, Inc, et al. Developing Professional-level Language Proficiency. Cambridge University Press, 2002.
Warning: These citations may not always be 100% accurate.