Dyfyniad APA

Reichheld, F. F., & Teal, T. (2001). The loyalty effect: The hidden force behind growth, profits, and lasting value. Harvard Business School Press.

Dyfyniad Arddull Chicago

Reichheld, Frederick F., and Thomas Teal. The Loyalty Effect: The Hidden Force Behind Growth, Profits, and Lasting Value. Boston, Mass.: Harvard Business School Press, 2001.

Dyfyniad MLA

Reichheld, Frederick F., and Thomas Teal. The Loyalty Effect: The Hidden Force Behind Growth, Profits, and Lasting Value. Harvard Business School Press, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.