Lua APA (7ú heag.)

(2000). Marketing ed.6 [ada CD]. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Marketing Ed.6 [ada CD]. McGraw-Hill, 2000.

Lua MLA (8ú heag.)

Marketing Ed.6 [ada CD]. McGraw-Hill, 2000.

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