Bedford, E.C.G. 1968a The biological control of red scale, Aonidiella aurantii (Mask.), on citrus in South Africa.. Journal of the Entomological Society of Southern Africa 31: 1-15.

Notes: History and progress of biological control of this pest; discussion of Parathion as both a cure and a cause of red scale; obtacles to biological control; importance of controlling ants.