Metcalf, R.L., & Metcalf, R.A. 1993 . Destructive and Useful Insects: Their Habits and Control. McGraw Hill New York
Notes: Scale insects are mentioned in various chapters throughout the book. Chapters include Insects as Enemies of Humans, the Value of Insects to Humans, the Morphology, Physiology and Biochemistry of Insects, Development and Metamorphosis, Classification, Insect Control, Application of Insecticides, and several chapters on insects that cause damage to specific crops.