WELLS W. (1989). ADVERTISING: PRINCIPLES AND PRACTICE. PRENTICE -HALL INTERNATIONAL; INC.
Cita Chicago (17th ed.)WELLS W. ADVERTISING: PRINCIPLES AND PRACTICE. NEW JERSEY: PRENTICE -HALL INTERNATIONAL; INC, 1989.
Cita MLA (9th ed.)WELLS W. ADVERTISING: PRINCIPLES AND PRACTICE. PRENTICE -HALL INTERNATIONAL; INC, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.