Hall, D. W., & Butler, J. F. (2009). Common name: mourning cloak (known in the United Kingdom as the Camberwell beauty) Nymphalis antiopa (Linnaeus) (Insecta: Lepidoptera: Nymphalidae: Nymphalinae): EENY 451/IN821, 6/2009. EDIS, 2009(6). https://doi.org/10.32473/edis-in821-2009