Ferrar, W. (1967). Calculus for beginners. Clarendon Press.
Chicago-čujuhus (17. p.)Ferrar, W. Calculus for Beginners. Oxford: Clarendon Press, 1967.
MLA-čujuhus (9. p.)Ferrar, W. Calculus for Beginners. Clarendon Press, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.