Childs, J. J. (1965). Principles of numerical control. Industrial Press.
Chicago-čujuhus (17. p.)Childs, James J. Principles of Numerical Control. Nueva York: Industrial Press, 1965.
MLA-čujuhus (9. p.)Childs, James J. Principles of Numerical Control. Industrial Press, 1965.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.