Charan, R. (2007). What the Customer Wants You to Know. Portfolio/Penguin.
Chicago Style (17. basım) AtıfCharan, Ram. What the Customer Wants You to Know. Gururgram: Portfolio/Penguin, 2007.
MLA (9th ed.) AtıfCharan, Ram. What the Customer Wants You to Know. Portfolio/Penguin, 2007.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..