Godin, S. (1999). Permission marketing: Turning strangers into friends, and friends into customers. Simon & Schuster.
Citazione stile Chigago Style (17a edizione)Godin, Seth. Permission Marketing: Turning Strangers into Friends, and Friends into Customers. New York: Simon & Schuster, 1999.
Citatione MLA (8a ed.)Godin, Seth. Permission Marketing: Turning Strangers into Friends, and Friends into Customers. Simon & Schuster, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.