Required:
Herrera, C. M. and O. Pellmyr (editors) 2002. Plant-animal Interactions: An Evolutionary Approach. Blackwell Science, Oxford, UK.
Optional:
Abrahamson, W. G. and A. E. Weis 1997 Evolutionary Ecology across Three Trophic Levels: Goldenrods, Gallmakers, and Natural Enemies. Princeton University Press, Princeton, NJ.
Abrahamson, W. G.
(editor) 1989. Plant-animal Interactions. McGraw-Hill Book
Company, New York, NY.