Cita APA (7th ed.)
Wells, J. V. (2007). Birder's conservation handbook: 100 North American birds at risk. Princeton University Press.
Cita Chicago (17th ed.)
Wells, Jeffrey V. Birder's Conservation Handbook: 100 North American Birds at Risk. Princeton, N.J. ; Woodstock: Princeton University Press, 2007.
Cita MLA (9th ed.)
Wells, Jeffrey V. Birder's Conservation Handbook: 100 North American Birds at Risk. Princeton University Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.