Webb, J. W. (1999). Programmable logic controllers : principles and applications: Fourth edition. Upper Saddle River, NJ: Prentice Hall.
Chicago Style CitationWebb, John W. Programmable Logic Controllers : Principles and Applications: Fourth Edition. Upper Saddle River, NJ: Prentice Hall, 1999.
MLA CitationWebb, John W. Programmable Logic Controllers : Principles and Applications: Fourth Edition. Upper Saddle River, NJ: Prentice Hall, 1999.
Warning: These citations may not always be 100% accurate.