Cita APA

Gutjahr, L. (2009). English for sales & purchasing. Oxford (New York): Oxford University Press.

Chicago Style Citation

Gutjahr, Lothar. English for Sales & Purchasing. Oxford (New York): Oxford University Press, 2009.

Cita MLA

Gutjahr, Lothar. English for Sales & Purchasing. Oxford (New York): Oxford University Press, 2009.

Atenció: Aquestes cites poden no estar 100% correctes.