Παραπομπή σε μορφή APA (7η εκδ.)

McGraw-Hill & Walther, G. R. (1994). Upside-down marketing: Turning your ex-customers into your best customers. McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

McGraw-Hill και George R. Walther. Upside-down Marketing: Turning Your Ex-customers into Your Best Customers. New York: McGraw-Hill, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

McGraw-Hill και George R. Walther. Upside-down Marketing: Turning Your Ex-customers into Your Best Customers. McGraw-Hill, 1994.