(1995). Managing Sales Leads How To Turn Every Prospect Into A Costumer Bob Donath ... [et Al.]. NTC Business Books.
Lua i Stíl Chicago (17ú heag.)Managing Sales Leads How To Turn Every Prospect Into A Costumer Bob Donath ... [et Al.]. NTC Business Books, 1995.
Lua MLA (8ú heag.)Managing Sales Leads How To Turn Every Prospect Into A Costumer Bob Donath ... [et Al.]. NTC Business Books, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.