Manning, G. L., & Reece, B. L. (2001). Selling today: Building quality partnerships (8th ed.). Prentice Hall ; Pearson Education.
Lua i Stíl Chicago (17ú heag.)Manning, Gerald L., agus Barry L. Reece. Selling Today: Building Quality Partnerships. 8th ed. Upper Saddle River, New Jersey : New Delhi: Prentice Hall ; Pearson Education, 2001.
Lua MLA (8ú heag.)Manning, Gerald L., agus Barry L. Reece. Selling Today: Building Quality Partnerships. 8th ed. Prentice Hall ; Pearson Education, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.