- Cranshaw, W. S., and D. Leatherman. 198. Ips beetles: characteristics and control. Colorado State University Cooperative Extension Service, Service in Action [Circular] No. 5.558.
- Wawrzynski, R. P., A. D. Kahn, W. S. Cranshaw, and D. A. Leatherman. 1986. Insect pests of Colorado trees. Colorado State University Cooperative Extension Service, Bulletin 506a. 60 p.