Ferrar, W. (1967). Calculus for beginners. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Ferrar, W. Calculus for Beginners. Oxford: Clarendon Press, 1967.
Lua MLA (9ú heag.)Ferrar, W. Calculus for Beginners. Clarendon Press, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.