Rosenfield, R. N., Rosenfield, L. J., Bielefeldt, J., Murphy, R. K., Stewart, A. C., Stout, W. E., . . . Bozek, M. A. (2010). Comparative Morphology of Northern Populations of Breeding Cooper's Hawks. The Condor: An International Journal of Avian Biology, 112(2), 347-355. https://doi.org/10.1525/cond.2010.090148

Rosenfield, Robert N., Laura J. Rosenfield, John Bielefeldt, Robert K. Murphy, Andrew C. Stewart, William E. Stout, Timothy G. Driscoll, and Michael A. Bozek. "Comparative Morphology of Northern Populations of Breeding Cooper's Hawks." The Condor: An International Journal of Avian Biology 112, no. 2 (2010): 347-355. https://doi.org/10.1525/cond.2010.090148.

Rosenfield, Robert N., et al. "Comparative Morphology of Northern Populations of Breeding Cooper's Hawks." The Condor: An International Journal of Avian Biology, vol. 112, no. 2, 2010, pp. 347-355, https://doi.org/10.1525/cond.2010.090148.