STEELE, P. T. (1999). Business negotiation a practical workbook. Gower.
Lua i Stíl Chicago (17ú heag.)STEELE, Paul T. Business Negotiation a Practical Workbook. Gower, 1999.
Lua MLA (8ú heag.)STEELE, Paul T. Business Negotiation a Practical Workbook. Gower, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.