Hiebing, R. G. (2003). The successful marketing plan. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Hiebing, Roman G. The Successful Marketing Plan. McGraw-Hill, 2003.
Lua MLA (8ú heag.)Hiebing, Roman G. The Successful Marketing Plan. McGraw-Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.