WEBSTER BRYEE. (1987). POWER OF CONSULTATIVE SELLING. PRENTICE -HALL INTERNATIONAL, INC.
Lua i Stíl Chicago (17ú heag.)WEBSTER BRYEE. POWER OF CONSULTATIVE SELLING. NEW JERSEY: PRENTICE -HALL INTERNATIONAL, INC, 1987.
Lua MLA (9ú heag.)WEBSTER BRYEE. POWER OF CONSULTATIVE SELLING. PRENTICE -HALL INTERNATIONAL, INC, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.