Παραπομπή σε μορφή APA (7η εκδ.)

REICHHELD,FREDERICK. (1996). The loyalty effect: The hidden force behind growth profits and lasting value. Harvard business school.

Παραπομπή σε μορφή Chicago (17η εκδ.)

REICHHELD,FREDERICK. The Loyalty Effect: The Hidden Force Behind Growth Profits and Lasting Value. Boston: Harvard business school, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

REICHHELD,FREDERICK. The Loyalty Effect: The Hidden Force Behind Growth Profits and Lasting Value. Harvard business school, 1996.