APA Citation

 Cotton, D. (2005).  Market leader: Pre - Intermediate business english course book.  Longmans.

Chicago Style Citation

 Cotton, David.  Market Leader: Pre - Intermediate Business English Course Book.  Longmans, 2005.

MLA Citation

 Cotton, David.  Market Leader: Pre - Intermediate Business English Course Book.  Longmans, 2005.

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