Gaya APA
Wirtz, Jochen. (2018).
Essentials of Services Marketing .
England:
Pearson Education International.
Gaya Chicago
Wirtz, Jochen.
Essentials of Services Marketing.
England:
Pearson Education International,
2018.
Text.
Gaya MLA
Wirtz, Jochen.
Essentials of Services Marketing.
England:
Pearson Education International,
2018.
Text.
Gaya Turabian
Wirtz, Jochen.
Essentials of Services Marketing.
England:
Pearson Education International,
2018.
Print.