Cita APA (7th ed.)

Chaffey, D. (2013). Emarketing Excellence (4th.). Routledge.

Cita Chicago (17th ed.)

Chaffey, Dave. Emarketing Excellence. 4th. New York: Routledge, 2013.

Cita MLA (9th ed.)

Chaffey, Dave. Emarketing Excellence. 4th. Routledge, 2013.