Sewell, C., & Brown, P. B. (2002). Customers for Life: How to Turn that One-time Buyer into a Lifetime Customer. Crown.
Chicago-Zitierstil (17. Ausg.)Sewell, Carl, und Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. New York: Crown, 2002.
MLA-Zitierstil (9. Ausg.)Sewell, Carl, und Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. Crown, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.