Citação norma APA
ebrary, Inc, Kessler, J., & Keatinge, D. (2009). Research in second language acquisition: Empirical evidence across languages. Cambridge Scholars.
Citação norma Chicago
ebrary, Inc, Jörg-U Kessler, and Dagmar Keatinge. Research in Second Language Acquisition: Empirical Evidence Across Languages. Newcastle upon Tyne: Cambridge Scholars, 2009.
Citação norma MLA
ebrary, Inc, et al. Research in Second Language Acquisition: Empirical Evidence Across Languages. Cambridge Scholars, 2009.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.