1. The compound bow: Ugly but effective;Arinson;Machine Design,1977
2. Easton. (2018). .
3. Elliot, M. (2002). Reference guide for recurve archers, Grange and Balbardie archery clubs. .
4. Structures or why things don’t fall down;Gordon,1978
5. Bowstring materials;Halpin;Journal of the Society of Archer-Antiquaries,2003