Gaya APA
Lovelock, C., Wirtz, J. (2004).
Services Marketing 5 Edition (People, Technology, Strategy) (5).
USA:
Pearson Education.
Gaya MLA
Lovelock, Christopher., Wirtz, Jochen.
"Services Marketing 5 Edition (People, Technology, Strategy)".
5
USA:
Pearson Education,
2004.
Textbook.