Gaya APA
Chaffey, D., Ellis-Chadwick, F. (2016).
Digital Marketing Strategy, Implementation and Practice .
United Kingdom:
Pearson Education Ltd.
Gaya MLA
Chaffey, Dave., Ellis-Chadwick, Fiona.
"Digital Marketing Strategy, Implementation and Practice".
United Kingdom:
Pearson Education Ltd,
2016.
Text.