Gaya APA
Kertajaya, H., Asmara, B.
(2016).
Wow Service Is Care
.
Jakarta:
PT. Gramedia Pustaka Utama.
Gaya MLA
Kertajaya, Hermawan., Asmara, Bayu.
"Wow Service Is Care".
Jakarta:
PT. Gramedia Pustaka Utama,
2016.
Texts.