Sviokla, J. J., & Shapiro, B. P. (1993). Keeping customers (11th ed.). HBR.
Chicago Edition CitationSviokla, John J., and Benson P. Shapiro. Keeping Customers. 11th ed. HBR, 1993.
Deismireacht MLASviokla, John J., and Benson P. Shapiro. Keeping Customers. 11th ed. HBR, 1993.
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