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.