APA引文

Sviokla, J. J., & Shapiro, B. P. (1993). Keeping customers (11th ed.). HBR.

Chicago Edition Citation

Sviokla, John J., and Benson P. Shapiro. Keeping Customers. 11th ed. HBR, 1993.

MLA引文

Sviokla, John J., and Benson P. Shapiro. Keeping Customers. 11th ed. HBR, 1993.

警告：這些引文格式不一定是100％准確.