ebrary, Inc, Kessler, J., & Keatinge, D. (2009). Research in second language acquisition: Empirical evidence across languages. Cambridge Scholars.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, Jörg-U Kessler, i Dagmar Keatinge. Research in Second Language Acquisition: Empirical Evidence Across Languages. Newcastle upon Tyne: Cambridge Scholars, 2009.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. Research in Second Language Acquisition: Empirical Evidence Across Languages. Cambridge Scholars, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.