Cita APA

 Johnston, M. W. (2008).  Relationship selling.  McGraw-Hill/Irwin.

Chicago Style Citation

 Johnston, Mark W.  Relationship Selling.  McGraw-Hill/Irwin, 2008.

Cita MLA

 Johnston, Mark W.  Relationship Selling.  McGraw-Hill/Irwin, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.