Tanner Johns. (2012). Sales Management. Pearson.
Lua i Stíl Chicago (17ú heag.)Tanner Johns. Sales Management. New Delhi: Pearson, 2012.
Lua MLA (9ú heag.)Tanner Johns. Sales Management. Pearson, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.