Dean, H.A. 1955 Factors affecting biological control of scale insects on Texas citrus.. Journal of Economic Entomology 48: 444-447.

Notes: Scales discussed include Aondidiella aurantii, Parlatoria pergandii, Lepisodaphes gloverii, L. beckii, Chrysomphalus aonidum, Aonidiella citrina, Coccus hesperidum and Icerya purchasi, along with their natural enemies.