Peeters, H. J. (2007). Field guide to owls of California and the West. University of California Press.
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Chicago-čujuhus (17. p.)
Peeters, Hans J. Field Guide to Owls of California and the West. Berkeley: University of California Press, 2007.
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MLA-čujuhus (9. p.)
Peeters, Hans J. Field Guide to Owls of California and the West. University of California Press, 2007.
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