Kogon, K., Merrill, A., & Rinne, L. (2015). The 5 choices: The path to extraordinary productivity (First Simon & Schuster hardcover edition.). Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKogon, Kory, Adam Merrill, और Leena Rinne. The 5 Choices: The Path to Extraordinary Productivity. First Simon & Schuster hardcover edition. New York: Simon & Schuster, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKogon, Kory, et al. The 5 Choices: The Path to Extraordinary Productivity. First Simon & Schuster hardcover edition. Simon & Schuster, 2015.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.