Cita APA (7a ed.)

Sewell, C., & Brown, P. B. (2002). Customers for Life: How to Turn that One-time Buyer into a Lifetime Customer. Crown.

Cita Chicago Style (17a ed.)

Sewell, Carl, y Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. New York: Crown, 2002.

Cita MLA (9a ed.)

Sewell, Carl, y Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. Crown, 2002.