APA Style
Chaffey, D., Smith, P. (2013).
Emarketing excellence : planning and optimizing your digital marketing (4th ed.).
London:
Routledge.
MLA Style
Chaffey, Dave., Smith, PR.
"Emarketing excellence : planning and optimizing your digital marketing".
4th ed.
London:
Routledge,
2013.
.