APA
Georgetown University Round Table on Languages and Linguistics (CURT'88), Walsh T. J., . (1989). Synchronic and diachronic approaches to linguistic variation and change. Washington: Georgetown University Press.
Chicago
Georgetown University Round Table on Languages and Linguistics (CURT'88), Walsh Thomas J, . 1989. Synchronic and diachronic approaches to linguistic variation and change. Washington: Georgetown University Press.
Harvard
Georgetown University Round Table on Languages and Linguistics (CURT'88), Walsh T. J., . (1989). Synchronic and diachronic approaches to linguistic variation and change. Washington: Georgetown University Press.
MLA
Georgetown University Round Table on Languages and Linguistics (CURT'88), Walsh Thomas J, . Synchronic and diachronic approaches to linguistic variation and change. Washington: Georgetown University Press. 1989.