- Spears, B., R. McKinney, C. Dull, W. Nettleton, D. Kahle, and R. Uhler. 1992. Southern pine beetle demonstration areas. Page 165 In Douglas C. Allen and L.P. Abrahamson (eds.), Proceedings: North American Forest Insect Work Conference, Denver, Colorado, March 25-28, 1991. United States Department of Agriculture, Forest Service, Pacific Northwest Research Station (Portland, OR), General Technical Report PNW-GTR-294.
- Spears, B., and W. Nettleton. 1993. Use of a geographic information system in southern pine beetle management . United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station (Radnor, PA), General Technical Report NE- 175:15-24.