Lilien Gary L. (1992). Marketing Models. PHI.
Lua i Stíl Chicago (17ú heag.)Lilien Gary L. Marketing Models. New Delhi: PHI, 1992.
Lua MLA (9ú heag.)Lilien Gary L. Marketing Models. PHI, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.