Cita APA (7a ed.)

Powell, J. A., & Opler, P. A. (2009). Moths of Western North America. University of California Press.

Cita Chicago Style (17a ed.)

Powell, Jerry A., y Paul A. Opler. Moths of Western North America. Berkeley: University of California Press, 2009.

Cita MLA (8a ed.)

Powell, Jerry A., y Paul A. Opler. Moths of Western North America. University of California Press, 2009.