APA (7 वां संस्करण) प्रशस्ति पत्र

Harvard Business Review Press. (2018). Purpose, Meaning, and Passion. Harvard Business Review Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Harvard Business Review Press. Purpose, Meaning, and Passion. Boston, Massachesutts: Harvard Business Review Press, 2018.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Harvard Business Review Press. Purpose, Meaning, and Passion. Harvard Business Review Press, 2018.