Cita APA (7th ed.)
ebrary, Inc, & Köpke, B. (2007). Language attrition: Theoretical perspectives. J. Benjamins Pub. Co..
Cita Chicago (17th ed.)
ebrary, Inc, i Barbara Köpke. Language Attrition: Theoretical Perspectives. Amsterdam ; Philadelphia: J. Benjamins Pub. Co., 2007.
Cita MLA (9th ed.)
ebrary, Inc, i Barbara Köpke. Language Attrition: Theoretical Perspectives. J. Benjamins Pub. Co., 2007.
Atenció: Aquestes cites poden no estar 100% correctes.