Gaya APA

Chaffey, D., Smith, P. (2008). eMarketing eXcellence Planning and optimizing your digital marketing (Third edition). United States of America: Elsevier Linacre House.

Gaya MLA

Chaffey, Dave., Smith, PR. "eMarketing eXcellence Planning and optimizing your digital marketing". Third edition United States of America: Elsevier Linacre House, 2008. eBook.