Coba jelasin Lihat pula dari Model kesetiaan dalam bisnis dong

Buchanan, R. and Gilles, C. (1990) "Value managed relationship: The key to customer retention and profitability", European Management Journal, vol 8, no 4, 1990.

Carrol, P. and Reichheld, F. (1992) "The fallacy of customer retention", Journal of Retail Banking, vol 13, no 4, 1992.

Dawkins, P. and Reichheld, F. (1990) "Customer retention as a competitive weapon", Directors and Boards, vol 14, no 4, 1990.

Fornell, C. and Wernerfet, B. (1987) "Defensive marketing strategy by customer complaint management: a theoretical analysis", Journal of Marketing

Reichheld, F. (1996) The Loyalty Effect, Harvard Business School Press, Boston, 1996.

Reichheld, F. and Sasser, W. (1990)"Zero defects: quality comes to services", Harvard Business Review, Sept-Oct, 1990, pp 105–111.

Schlesinger, L. and Heskett, J. (1991) "Breaking the cycle of failure in service", Sloan Management Review, spring, 1991, pp. 17–28.

Stieb, James A. (2006) "Clearing Up the Egoist Difficulty with Loyalty", Journal of Business Ethics, vol 63, no 1.

Storbacka, K. Strandvik, T. and Gronroos, C. (1994) "Managing customer relationships for profit", International Journal of Service Industry Management, vol 5, no 5, 1994, pp 21–28.