Akre, R. D.; Antonelli, A. L. 1976. Identification and habits of key ant pests of Washington. Washington State University College of Agriculture Cooperative Extension Service. Bulletin 671:1-5.

Akre, R. D.; Antonelli, A. L. 1987. Identification and habits of key ant pests of Washington. Washington State University College of Agriculture Cooperative Extension Service. Bulletin 0671:1-8.