Hackworth, J. R., & Hackworth, F. D. (2004). Programmable logic controllers : programming methods and applications / John R. Hackworth, Frederick D. Hackworth, Jr: Programming methods and applications. Prentice Hall.
Chicago Edition CitationHackworth, John R., and Frederick D. Hackworth. Programmable Logic Controllers : Programming Methods and Applications / John R. Hackworth, Frederick D. Hackworth, Jr: Programming Methods and Applications. Upper Saddle River, N.J.: Prentice Hall, 2004.
MLA Edition CitationHackworth, John R., and Frederick D. Hackworth. Programmable Logic Controllers : Programming Methods and Applications / John R. Hackworth, Frederick D. Hackworth, Jr: Programming Methods and Applications. Prentice Hall, 2004.
Warning: These citations may not always be 100% accurate.