Gaya APA
Windasuri, H. et al. (2017).
Excellent service: The secrets of building a service organization (Cet.1).
Jakarta :
Gramedia Pustaka Utama .
Gaya MLA
Windasuri, H. et al..
Excellent service: The secrets of building a service organization.
Cet.1
Jakarta :
Gramedia Pustaka Utama ,
2017.
Text.