LaRoux K. Gillespie (2003). Hand Deburring: Increasing Shop Productivity. Society of Manufacturing Engineers. p. 243. ISBN 978-0-87263-642-2. 978-0-87263-642-2 ↩
Wilbert Verhelst (1973). Sculpture: tools, materials, and techniques. Prentice-Hall. p. 200. ISBN 978-0-13-796615-8. 978-0-13-796615-8 ↩