Gaya APA

CHAFFEY, D., Ellis-Chadwick, F. (2019). DIGITAL MARKETING; Strategy, Implementation and Practice (7th). New Jersey: PEARSON.

Gaya MLA

CHAFFEY, Dave., Ellis-Chadwick, Fiona. "DIGITAL MARKETING; Strategy, Implementation and Practice". 7th New Jersey: PEARSON, 2019. Text.