STONE BOB. (1992). SUCCESSFUL TELEMARKETING: OPPORTUNITIES & TECH. FOR INC SALES AND PROFITS (2.). NTC BUSINESS BOOKS.
Lua i Stíl Chicago (17ú heag.)STONE BOB. SUCCESSFUL TELEMARKETING: OPPORTUNITIES & TECH. FOR INC SALES AND PROFITS. 2. U S A: NTC BUSINESS BOOKS, 1992.
Lua MLA (9ú heag.)STONE BOB. SUCCESSFUL TELEMARKETING: OPPORTUNITIES & TECH. FOR INC SALES AND PROFITS. 2. NTC BUSINESS BOOKS, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.