Lebbin, D. J., Parr, M., & Fenwick, G. H. (2010). The American Bird Conservancy guide to bird conservation. University of Chicago Press.
Chicago Style (17th ed.) ZitazioaLebbin, Daniel J., Mike Parr, eta George H. Fenwick. The American Bird Conservancy Guide to Bird Conservation. Chicago: University of Chicago Press, 2010.
MLA (9th ed.) ZitazioaLebbin, Daniel J., et al. The American Bird Conservancy Guide to Bird Conservation. University of Chicago Press, 2010.
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