1. The Biology of Butterflies;ACKERY P.R.,1984
2. Hostplants and classification: a review of nymphalid butterflies;ACKERY P.R.;Biological Journal of the Linnean Society,1988
3. Milkweed butterflies: their cladistics and biology. Being and account of the matural history of the Danainae, a subfamily of the Nymphalidae, Lepidoptera;ACKERY P.R.,1984
4. Monografías de Fauna de Colombia;ANDRADE-C. M.G.,1995
5. I. Notes on the genitalia of a gynandromorphous Eronia hippia;BETHUNE-BAKER G.T.;Transactions of the Entomological Society of London,1891