APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (9वां संस्करण) प्रशस्ति पत्र

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