↑Kuznetsov, Victor N. (1997) Lady Beetles of the Russian Far East, Center for Systematic Entomology, Memoir No. 1
↑Gordon, Robert, D., and Natalia Vandenberg (1991) Field guide to recently introduced species of Coccinellidae (Coleoptera) in North America, with a revised key to North American genera of Coccinellini, Proceedings of the Entomological Society of Washington, vol. 93, no. 4
↑Chapin, J. B., and V. A. Brou (1991) Harmonia axyridis (Pallas), the third species of the genus to be found in the United States (Coleoptera: Coccinellidae), Proceedings of the Entomological Society of Washington, vol. 93, no. 3
