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RefNo
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Description
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| Bisby, F.A., M.A. Ruggiero, K.L. Wilson, M. Cachuela-Palacio, S.W. Kimani, Y.R. Roskov, A. Soulier-Perkins and J. van Hertum, 2005 Species 2000 & ITIS Catalogue of Life: 2005 Annual Checklist. CD-ROM; Species 2000: Reading, U.K. | |
| Driver, E.A., L.G. Sugden and R.J. Kovach, 1974 Calorific, chemical and physical values of potential duck foods. Freshwater Biology 4:281-292. | |
| NatureServe, 2009 NatureServe Explorer: An online encyclopedia of life [web application]. NatureServe version 7.1 (2 February 2009) updated October 2009. Arlington, Virginia. Available at www.natureserve.org/explorer. |