Gaya APA

Chaffey, D., Ellis-Chadwick, F. (s.a). Digital marketing : strategy, implementation and practice (Cet. 1.). s.l: Pearson.

Gaya MLA

Chaffey, Dave., Ellis-Chadwick, Fiona. "Digital marketing : strategy, implementation and practice". Cet. 1. s.l: Pearson, s.a. Text.