Gaya APA

Kartajaya, H., Asmara, B. (2014). Wow service is care (Cet. 4). Jakarta: PT Gramedia Pustaka Utama.

Gaya MLA

Kartajaya, Herman., Asmara, Bayu. "Wow service is care". Cet. 4 Jakarta: PT Gramedia Pustaka Utama, 2014. Text.