Cita APA

 Langan, J. (2008).  English skills with readings.  McGraw-Hill Higher Education.

Chicago Style Citation

 Langan, John.  English Skills With Readings.  McGraw-Hill Higher Education, 2008.

Cita MLA

 Langan, John.  English Skills With Readings.  McGraw-Hill Higher Education, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.