Cita APA (7th ed.)

Bird, D. (2008). Commonsense direct and digital marketing (5.). Kogan Page.

Cita Chicago (17th ed.)

Bird, Drayton. Commonsense Direct and Digital Marketing. 5. New Delhi: Kogan Page, 2008.

Cita MLA (9th ed.)

Bird, Drayton. Commonsense Direct and Digital Marketing. 5. Kogan Page, 2008.