1. Centers for Disease Control and Prevention. (2023). Occurrence. Chronic Wasting Disease (CWD). https://www.cdc.gov/prions/cwd/occurrence.html
2. Colorado Parks and Wildlife. (2018). Colorado chronic wasting disease response plan. https://cpw.state.co.us/Documents/Hunting/BigGame/CWD/PDF/ColoradoChronicWastingDiseaseResponsePlan.pdf
3. Colorado Parks and Wildlife. (2021). 2021 big game license recommendation summary by species. Colorado parks and wildlife commission memo. https://cpw.state.co.us/Documents/Commission/2022/May/2022Big_Game_License_Recommendation_Summary_21April2022-Matthew_Eckert-DNR.pdf
4. Czajka J. L. & Beyler A. (n.d). Declining response rates in federal surveys: Trends and implications. (Background Paper). Mathematica Policy Research Reports.
5. Antecedents to hunting participation: An exploratory study of the social-psychological determinants of initiation, continuation, and desertion in hunting;Decker D. J.;Human Dimensions Research Unit Publication Series, Cornell University,1984