Cita APA

Johnston Mark W, & Marshall Greg W. (2008). Relationship Selling. American: McGraw -Hill.

Chicago Style Citation

Johnston Mark W, i Marshall Greg W. Relationship Selling. American: McGraw -Hill, 2008.

Cita MLA

Johnston Mark W, i Marshall Greg W. Relationship Selling. American: McGraw -Hill, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.