Kaufman, K. (2011). Kaufman field guide to advanced birding: Understanding what you see and hear. Houghton Mifflin Harcourt.
Cita Chicago Style (17a ed.)Kaufman, Kenn. Kaufman Field Guide to Advanced Birding: Understanding What You See and Hear. New York: Houghton Mifflin Harcourt, 2011.
Cita MLA (8a ed.)Kaufman, Kenn. Kaufman Field Guide to Advanced Birding: Understanding What You See and Hear. Houghton Mifflin Harcourt, 2011.
Precaución: Estas citas no son 100% exactas.