Lua APA (7ú heag.)

(2003). Marketing ed.7 [ada CD]. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Marketing Ed.7 [ada CD]. McGraw-Hill, 2003.

Lua MLA (8ú heag.)

Marketing Ed.7 [ada CD]. McGraw-Hill, 2003.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.