1. R.A. Arnold, "Univ. Calif. Publ. Ent." 99, "Ecological studies of six endangered butterflies: island biogeography, patch dynamics, and the design of habitat preserves." 1 (1983)
2. R.A. Arnold, "Endangered Wildlife and Habitats in Southern California." 3, "The ecology and conservation of two endangered Southern California butterflies." 36 (1990)
3. R.A. Arnold and A.E. Goins "Integrating Man and Nature in the Metropolitan Environment." "Habitat enhancement techniques for the El Segundo blue butterfly, an urban endangered species." 173 (1987)
4. L.M. Cook, L.P. Brower, H.J. Croze, "J. Animal Ecology." 36, "The accuracy of a population estimate from multiple-recapture data." 57 (1967)
5. W.S. Cooper, "Geol. Soc. Amer. Memoir." "Coastal dunes of California." 131 (1967)