Institute of Marketing and Sales Management. (1961). A manual of sales management. Pitman.
Lua i Stíl Chicago (17ú heag.)Institute of Marketing and Sales Management. A Manual of Sales Management. London: Pitman, 1961.
Lua MLA (9ú heag.)Institute of Marketing and Sales Management. A Manual of Sales Management. Pitman, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.