Blackmer, J. L., and P. Hanson. “Abundance and Life History of Two Gall-Inducing Homopterans on Nectandra Salicina (Lauraceae) in Monteverde, Costa Rica”. Revista De Biología Tropical, vol. 45, no. 3, Sept. 1997, pp. 1131–1137, doi:10.15517/rbt.v45i3.32120.