Still Richard R. (2014). Sales Management. Pearson.
Lua i Stíl Chicago (17ú heag.)Still Richard R. Sales Management. Delhi: Pearson, 2014.
Lua MLA (9ú heag.)Still Richard R. Sales Management. Pearson, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.