Gaya APA
Kasmir, . (2018).
CUSTOMER SERVICES EXCELLENT : Teori dan Praktik (edisi 1, cet.2).
DEPOK:
PT. RAJAGRAFINDO PERSADA.
Gaya MLA
Kasmir, .
"CUSTOMER SERVICES EXCELLENT : Teori dan Praktik".
edisi 1, cet.2
DEPOK:
PT. RAJAGRAFINDO PERSADA,
2018.
Text.