Brennan, R. (2011). Business to business maketing (2nd.). Sage Publisher.
Lua i Stíl Chicago (17ú heag.)Brennan, Ross. Business to Business Maketing. 2nd. New Delhi: Sage Publisher, 2011.
Lua MLA (9ú heag.)Brennan, Ross. Business to Business Maketing. 2nd. Sage Publisher, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.