Cita APA (7th ed.)

Wills, G. (1989). Maximizing marketing effectiveness. MCB University Press.

Cita Chicago (17th ed.)

Wills, Gordon. Maximizing Marketing Effectiveness. [s.l.]: MCB University Press, 1989.

Cita MLA (9th ed.)

Wills, Gordon. Maximizing Marketing Effectiveness. MCB University Press, 1989.