Dyfyniad APA

Reichheld, F. (2011). The ultimate question 2.0: How net promoter companies thrive in a customer-driven world. Boston, Mass: Harvard Business Press.

Dyfyniad Arddull Chicago

Reichheld, Fred. The Ultimate Question 2.0: How Net Promoter Companies Thrive in a Customer-driven World. Boston, Mass: Harvard Business Press, 2011.

Dyfyniad MLA

Reichheld, Fred. The Ultimate Question 2.0: How Net Promoter Companies Thrive in a Customer-driven World. Boston, Mass: Harvard Business Press, 2011.

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