APA (7th ed.) Citation

REICHHELD. (2006). The ultimate question: Driving good profits and true growth. Harvard Business School Publishing.

Chicago Style (17th ed.) Citation

REICHHELD. The Ultimate Question: Driving Good Profits and True Growth. Boston: Harvard Business School Publishing, 2006.

MLA (9th ed.) Citation

REICHHELD. The Ultimate Question: Driving Good Profits and True Growth. Harvard Business School Publishing, 2006.

Warning: These citations may not always be 100% accurate.