APA (7 वां संस्करण) प्रशस्ति पत्र

Harvard Business School. (2011). Communication Effectively. Harvard Business.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Harvard Business School. Communication Effectively. Boston: Harvard Business, 2011.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Harvard Business School. Communication Effectively. Harvard Business, 2011.