Hanna, A.D., Judenko, E., & Heatherington, W. 1955 Systemic insecticides for the control of insects transmitting swollen-shoot virus disease of cacao in the Gold Coast.. Bulletin of Entomological Research 46: 669-710.

Notes: Mealybug pecies mentioned include Ferrisia virgata, Pseudococcus citri and P. njalensis.