Gaya APA

Irawan, C. (2011). Kencan 8:8: Win Your Customer's Heart, Keep Them Forever and Let Them be Your Proof . JAKARTA: PT. Gramedia Pustaka Utama.

Gaya MLA

Irawan, Cyltamia. "Kencan 8:8: Win Your Customer's Heart, Keep Them Forever and Let Them be Your Proof". JAKARTA: PT. Gramedia Pustaka Utama, 2011. Textbook.