APA (7th ed.) Citation

Childs, J. J. (1969). Principles of numerical control (2a ed.). Industrial Press.

Chicago Style (17th ed.) Citation

Childs, James J. Principles of Numerical Control. 2a ed. New York: Industrial Press, 1969.

MLA (9th ed.) Citation

Childs, James J. Principles of Numerical Control. 2a ed. Industrial Press, 1969.

Warning: These citations may not always be 100% accurate.