APA (7th ed.) Citation

(2010). USA: Intermediate level (Dr. A1.). Westermann.

Chicago Style (17th ed.) Citation

USA: Intermediate Level. Dr. A1. Braunschweig: Westermann, 2010.

MLA (9th ed.) Citation

USA: Intermediate Level. Dr. A1. Westermann, 2010.

Warning: These citations may not always be 100% accurate.