APA-ийн эшлэл(7 дахь хэвлэлт)

Harvard Business School. (2011). Increasing Customer Loyalty. Harvard Business.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Harvard Business School. Increasing Customer Loyalty. Boston: Harvard Business, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Harvard Business School. Increasing Customer Loyalty. Harvard Business, 2011.