Tabor, D. (2000). The hardness of metals (1a. ed.). Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Tabor, David. The Hardness of Metals. 1a. ed. Oxford: Clarendon Press, 2000.
Lua MLA (9ú heag.)Tabor, David. The Hardness of Metals. 1a. ed. Clarendon Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.