Clark, S.W., & Friend, W.H. 1932 California red scale and its control in the lower Rio Grande Valley of Texas.. Bulletin (Texas Agricultural Experiment Station) No. 455: 1-35.

Notes: Description, nature and importance of injury, life history and habits, and natural and chemical control of Chrysomphalus aurantii on citrus. Lepidosaphes beckii and Parlatoria pergandei (pergandi?) also mentioned as pests on citrus.