Παραπομπή APA

Frei, F. X. (2012). Uncommon service: How to win by putting customers at the core of your business. Boston, Massachusetts: Harvard Business Review Press.

Παραπομπή Chicago Style

Frei, Frances X. Uncommon Service: How to Win By Putting Customers At the Core of Your Business. Boston, Massachusetts: Harvard Business Review Press, 2012.

Παραπομπή MLA

Frei, Frances X. Uncommon Service: How to Win By Putting Customers At the Core of Your Business. Boston, Massachusetts: Harvard Business Review Press, 2012.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.