Citazione APA

Barrera, R. (2005). Overpromise and overdeliver: The secrets of unshakable customer loyality. Penguin.

Stile di citazione Chicago

Barrera, Rick. Overpromise and Overdeliver: The Secrets of Unshakable Customer Loyality. New Delhi: Penguin, 2005.

Citazione MLA

Barrera, Rick. Overpromise and Overdeliver: The Secrets of Unshakable Customer Loyality. Penguin, 2005.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.