APA (7th ed.) Citation

(1989). Variation in second language acquisition. Multilingual Matters.

Chicago Style (17th ed.) Citation

Variation in Second Language Acquisition. Clevedon, Avon, England: Multilingual Matters, 1989.

MLA (9th ed.) Citation

Variation in Second Language Acquisition. Multilingual Matters, 1989.

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