APA (7th ed.) Citation

Duff, P. A. (2008). Case study research in applied linguistics. Erlbaum.

Chicago Style (17th ed.) Citation

Duff, Patricia A. Case Study Research in Applied Linguistics. New York [u.a.]: Erlbaum, 2008.

MLA (9th ed.) Citation

Duff, Patricia A. Case Study Research in Applied Linguistics. Erlbaum, 2008.