Gaya APA
Chaffey,Dave. (2016).
Digital Marketing .
London:
Pearson Education.
Gaya Chicago
Chaffey,Dave.
Digital Marketing.
London:
Pearson Education,
2016.
Text.
Gaya MLA
Chaffey,Dave.
Digital Marketing.
London:
Pearson Education,
2016.
Text.
Gaya Turabian
Chaffey,Dave.
Digital Marketing.
London:
Pearson Education,
2016.
Print.