APA (7th ed.) Citation

Ellis, R. (1985). Unterstanding second language acquisition. Oxford university press.

Chicago Style (17th ed.) Citation

Ellis, R. Unterstanding Second Language Acquisition. Oxford: Oxford university press, 1985.

MLA (8th ed.) Citation

Ellis, R. Unterstanding Second Language Acquisition. Oxford university press, 1985.

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