Barber, J. R. (2002). Elasticity (2a. ed.). Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Barber, J. R. Elasticity. 2a. ed. Dordrecht: Kluwer Academic Publishers, 2002.
Lua MLA (9ú heag.)Barber, J. R. Elasticity. 2a. ed. Kluwer Academic Publishers, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.