Gaya APA
Haryono, PM Budi. (2018).
How to be a Professional customer service (1).
Yogyakarta:
Andi.
Gaya Chicago
Haryono, PM Budi.
How to be a Professional customer service.
1
Yogyakarta:
Andi,
2018.
Text.
Gaya MLA
Haryono, PM Budi.
How to be a Professional customer service.
1
Yogyakarta:
Andi,
2018.
Text.
Gaya Turabian
Haryono, PM Budi.
How to be a Professional customer service.
1
Yogyakarta:
Andi,
2018.
Print.