Gaya APA
Kartajaya, H., Asmara, B.
(2014).
WOW Service is Care
(
Cet.1)
.
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
Kartajaya, Hermawan., Asmara, Bayu.
"WOW Service is Care".
Cet.1
Jakarta:
PT Gramedia Pustaka Utama,
2014.
Text.