Cita APA (7th ed.)

Dave Chaffey & Fiona Ellis. (2019). Digital Marketing (7th ed.). Pearson.

Cita Chicago (17th ed.)

Dave Chaffey i Fiona Ellis. Digital Marketing. 7th ed. Delhi: Pearson, 2019.

Cita MLA (9th ed.)

Dave Chaffey i Fiona Ellis. Digital Marketing. 7th ed. Pearson, 2019.