APA (7th ed.) Citation

Klein, W. (2001). Second language acquisition. International encyclopedia of the social & behavioral sciences. https://doi.org/10.1016/B0-08-043076-7/03026-6

Chicago Style (17th ed.) Citation

Klein, Wolfgang. "Second Language Acquisition." International Encyclopedia of the Social & Behavioral Sciences 2001. https://doi.org/10.1016/B0-08-043076-7/03026-6.

MLA (9th ed.) Citation

Klein, Wolfgang. "Second Language Acquisition." International Encyclopedia of the Social & Behavioral Sciences, 2001, https://doi.org/10.1016/B0-08-043076-7/03026-6.