APA Style

Chaffey, D., Ellis-Chadwick, F. (2019). Digital Marketing : Strategy, Implementation and Practice (7th.ed). Harlow, England: Pearson Education.

MLA Style

Chaffey, Dave,., Ellis-Chadwick, Fiona,. "Digital Marketing : Strategy, Implementation and Practice". 7th.ed Harlow, England: Pearson Education, 2019. PDF.