1. Brown M.W. Miller S.S. 1998. Coccinellidae (Co-leoptera) in apple orchards of eastern West Virginia and the impact of invasion by Harmonia axyridis . Entomol. News. 109: 136–142.
2. Chapin J.B. Brou V.A. 1991. Harmonia axyridis (Pallas), the third species of the genus to be found in the U.S. (Coleoptera: Coccinellidae). Proc. Entomol. Soc. Wash. 93: 630–635.
3. THE OCCURRENCE OF HARMONIA AXYRIDIS (PALLAS) (COLEOPTERA: COCCINELLIDAE) IN CANADA
4. Arrival, Establishment, and Habitat Use of the Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae) in a Michigan Landscape
5. Cottrell T.E. Yeargan K.V. 1998. Intraguildpredation between an introduced lady beetle, Harmonia axyridis (Coleoptera: Coccinellidae), and a native lady beetle, Coleomegilla maculata (Coleoptera: Coccinellidae). J. Kans. Entomol. Soc. 71: 159–163.