Dyfyniad APA
Powell, J. A., & Opler, P. A. (2009). Moths of Western North America. University of California Press.
Dyfyniad Arddull Chicago
Powell, Jerry A., and Paul A. Opler. Moths of Western North America. Berkeley: University of California Press, 2009.
Dyfyniad MLA
Powell, Jerry A., and Paul A. Opler. Moths of Western North America. University of California Press, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.