APA (7th ed.) Citation

Preston, D. R. (1989). Sociolinguistics and second language acquisition. Basil Blackwell.

Chicago Style (17th ed.) Citation

Preston, Dennis R. Sociolinguistics and Second Language Acquisition. Oxford: Basil Blackwell, 1989.

MLA (9th ed.) Citation

Preston, Dennis R. Sociolinguistics and Second Language Acquisition. Basil Blackwell, 1989.

Warning: These citations may not always be 100% accurate.