- NASSA Brochure
- NASSA Handbook
- Appendix A
Appendix A is not an official NASSA document. It is an educational tool that members may use if they desire.
- The Need to Conserve Different Types of Shetland Sheep
D.P. Sponenberg, DVM Ph.D. In NASSA NEWS, Vol. 3 No. 3., July 1993.
- The Sheep of Shetland: A Historical Perspective
George Benedict’s synthesis of published references to Shetland Sheep in the 18th and 19th Centuries.