APA (7th ed.) Citation

Adamson, H. D. (1988). Variation theory and second language acquisition. Georgetown University Press.

Chicago Style (17th ed.) Citation

Adamson, H. D. Variation Theory and Second Language Acquisition. Washington, D.C.: Georgetown University Press, 1988.

MLA (9th ed.) Citation

Adamson, H. D. Variation Theory and Second Language Acquisition. Georgetown University Press, 1988.