Cita APA (7a ed.)

Appleby, M., Friedrich, V., Haupt, D., Hoffmann, R., Reischauer, D., & Rischke, D. M. (2010). USA: Intermediate level (Druck A 1.). Westermann.

Cita Chicago Style (17a ed.)

Appleby, Matthew, Volker Friedrich, Dieter Haupt, Reinhard Hoffmann, Dirk Reischauer, y Dimo M. Rischke. USA: Intermediate Level. Druck A 1. Braunschweig: Westermann, 2010.

Cita MLA (9a ed.)

Appleby, Matthew, et al. USA: Intermediate Level. Druck A 1. Westermann, 2010.