1. Bullis , C 1984 Communication at unobtrusive control Are-examination of identification in the US forest service Unpublished doctoral dissertation Purdue University
2. Bullis , C. Kennedy , J J 1990 Professional sub cultural value conflicts and policy interpretation The case of wildlife and fisheries managers in the US Forest Service
3. What kind of wildlifers will be needed in the 1980s;Cutler;Wildlife Society Bulletin,1982