Gaya APA
GUSWAI. (2015).
How to create outstanding service .
Jakarta:
Elex Media Komputindo.
Gaya Chicago
GUSWAI.
How to create outstanding service.
Jakarta:
Elex Media Komputindo,
2015.
Text.
Gaya MLA
GUSWAI.
How to create outstanding service.
Jakarta:
Elex Media Komputindo,
2015.
Text.
Gaya Turabian
GUSWAI.
How to create outstanding service.
Jakarta:
Elex Media Komputindo,
2015.
Print.