Charan, R. (2007). What the Customer Wants You to Know. Portfolio/Penguin.
Citazione stile Chigago Style (17a edizione)Charan, Ram. What the Customer Wants You to Know. Gururgram: Portfolio/Penguin, 2007.
Citatione MLA (9a ed.)Charan, Ram. What the Customer Wants You to Know. Portfolio/Penguin, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.