Cita APA (7th ed.)
Peeters, H. J. (2007). Field guide to owls of California and the West. University of California Press.
Cita Chicago (17th ed.)
Peeters, Hans J. Field Guide to Owls of California and the West. Berkeley: University of California Press, 2007.
Cita MLA (9th ed.)
Peeters, Hans J. Field Guide to Owls of California and the West. University of California Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.