SCHIFFMAN, L. G. (2010). Consumer BehaviorGlobal edition. Pearson.
Lua i Stíl Chicago (17ú heag.)SCHIFFMAN, Leon G. Consumer BehaviorGlobal Edition. Pearson, 2010.
Lua MLA (8ú heag.)SCHIFFMAN, Leon G. Consumer BehaviorGlobal Edition. Pearson, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.