Kaufman, K. (2011). Kaufman field guide to advanced birding: Understanding what you see and hear. Houghton Mifflin Harcourt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKaufman, Kenn. Kaufman Field Guide to Advanced Birding: Understanding What You See and Hear. New York: Houghton Mifflin Harcourt, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKaufman, Kenn. Kaufman Field Guide to Advanced Birding: Understanding What You See and Hear. Houghton Mifflin Harcourt, 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.