Sewell, C., & Brown, P. B. (2002). Customers for Life: How to Turn that One-time Buyer into a Lifetime Customer. Crown.
Citace podle Chicago (17th ed.)Sewell, Carl, a Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. New York: Crown, 2002.
Citace podle MLA (9th ed.)Sewell, Carl, a Paul B. Brown. Customers for Life: How to Turn That One-time Buyer into a Lifetime Customer. Crown, 2002.
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