HOWARD, J. A. (1994). Buer Behavior In Marketing Strategy John A. Howard. Prentic-Hall.
Lua i Stíl Chicago (17ú heag.)HOWARD, John A. Buer Behavior In Marketing Strategy John A. Howard. Prentic-Hall, 1994.
Lua MLA (8ú heag.)HOWARD, John A. Buer Behavior In Marketing Strategy John A. Howard. Prentic-Hall, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.