W.Johnston Mark, & W.Marshall Greg. (2008). Relationship Selling. American: Mc Graw Hill.
Čikaški stil citiranjaW.Johnston Mark, i W.Marshall Greg. Relationship Selling. American: Mc Graw Hill, 2008.
MLA način citiranjaW.Johnston Mark, i W.Marshall Greg. Relationship Selling. American: Mc Graw Hill, 2008.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.