Bird, T. Brilliant Selling 2nd edn: What the best salespeople know, do and say : What the best salespeople know, do and say (2.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Bird, Tom;Cassell. Brilliant Selling 2nd Edn: What the Best Salespeople Know, Do and Say : What the Best Salespeople Know, Do and Say. 2. Pearson Education UK.
Lua MLA (8ú heag.)Bird, Tom;Cassell. Brilliant Selling 2nd Edn: What the Best Salespeople Know, Do and Say : What the Best Salespeople Know, Do and Say. 2. Pearson Education UK.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.