Cita APA (7th ed.)
Powell, J. A., & Opler, P. A. (2009). Moths of Western North America. University of California Press.
Cita Chicago (17th ed.)
Powell, Jerry A., i Paul A. Opler. Moths of Western North America. Berkeley: University of California Press, 2009.
Cita MLA (9th ed.)
Powell, Jerry A., i Paul A. Opler. Moths of Western North America. University of California Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.