Sharp, H. (1968). Modern retailing techniques (2nd.). Macdonald & Evans.
Lua i Stíl Chicago (17ú heag.)Sharp, Henry. Modern Retailing Techniques. 2nd. Lonodn: Macdonald & Evans, 1968.
Lua MLA (9ú heag.)Sharp, Henry. Modern Retailing Techniques. 2nd. Macdonald & Evans, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.