APA Citation

 Cotton, D. (2010).  Market leader: Intermediate business english course book B1-B2.  Pearson.

Chicago Style Citation

 Cotton, David.  Market Leader: Intermediate Business English Course Book B1-B2.  Pearson, 2010.

MLA Citation

 Cotton, David.  Market Leader: Intermediate Business English Course Book B1-B2.  Pearson, 2010.

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