Woodbury, R. S. (1959). History of the grinding machine: A historical study in tools and precision production. M.I.T. Press.
Lua i Stíl Chicago (17ú heag.)Woodbury, Robert S. History of the Grinding Machine: A Historical Study in Tools and Precision Production. Cambridge, Mass.: M.I.T. Press, 1959.
Lua MLA (8ú heag.)Woodbury, Robert S. History of the Grinding Machine: A Historical Study in Tools and Precision Production. M.I.T. Press, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.