Storer, A. J.; Jurgensen, M. F.; Risch, A. C.; Delisle, J.; Hyslop, M. D. (2008). "The fate of an intentional introduction of Formica lugubris to North America from Europe". Journal of Applied Entomology. 132 (4): 276–280. doi:10.1111/j.1439-0418.2008.01275.x. ISSN0931-2048. S2CID85894527.
Storer, A. J.; Jurgensen, M. F.; Risch, A. C.; Delisle, J.; Hyslop, M. D. (2008). "The fate of an intentional introduction of Formica lugubris to North America from Europe". Journal of Applied Entomology. 132 (4): 276–280. doi:10.1111/j.1439-0418.2008.01275.x. ISSN0931-2048. S2CID85894527.
Storer, A. J.; Jurgensen, M. F.; Risch, A. C.; Delisle, J.; Hyslop, M. D. (2008). "The fate of an intentional introduction of Formica lugubris to North America from Europe". Journal of Applied Entomology. 132 (4): 276–280. doi:10.1111/j.1439-0418.2008.01275.x. ISSN0931-2048. S2CID85894527.