Gaya APA

Webb, J, W., Reis, R, A. (2004). Programmable logic controller : principles and applications (5). nEW dELHI: Prentice-Hall of India Private Ltd..

Gaya MLA

Webb, John, W.., Reis, Ronald, A.. "Programmable logic controller : principles and applications". 5 nEW dELHI: Prentice-Hall of India Private Ltd., 2004. Text.