Cita APA

(2011).  Market leader: Upper intermediate business english course book.  Pearson.

Chicago Style Citation

 Market Leader: Upper Intermediate Business English Course Book.  Pearson, 2011.

Cita MLA

 Market Leader: Upper Intermediate Business English Course Book.  Pearson, 2011.

Atenció: Aquestes cites poden no estar 100% correctes.