1. Aphids of the world's Herbaceous Plants and Shrubs-an Identification and Information Guide;Blackman,2006
2. Aphid Ecology;Dixon,1985
3. Morph determination in the bird cherry-oat aphid, Rhopalosiphum padi L;Dixon;Ann. Appl. Biol.,1971
4. Biology and ecology of Aphis gossypii glover (Homoptera: Aphididae);Ebert;Southwest. Entomol,1997
5. The effect of maternal and larval experience on morph determination in Dysaphis devevta;Forrest;J. Insect Physiol.,1970