Παραπομπή APA

Frei, F., & Frances Frei; Anne Morriss. Uncommon service: How to win by putting customers at the core of your business. Boston, Mass: Harvard Business Review Press.

Παραπομπή Chicago Style

Frei, Frances, και Frances Frei; Anne Morriss. Uncommon Service: How to Win By Putting Customers At the Core of Your Business. Boston, Mass: Harvard Business Review Press.

Παραπομπή MLA

Frei, Frances, και Frances Frei; Anne Morriss. Uncommon Service: How to Win By Putting Customers At the Core of Your Business. Boston, Mass: Harvard Business Review Press.

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