एपीए उद्धरण

Webb, J. W., & Reis, R. A. (2002). Programmable logic controllers: Principles and applications (5th ed.). Prentice-Hall of India.

शिकागो स्टाइल उद्धरण

Webb, John W., और Ronanld Ad Reis. Programmable Logic Controllers: Principles and Applications. 5th ed. New Delhi: Prentice-Hall of India, 2002.

एमएलए उद्धरण

Webb, John W., और Ronanld Ad Reis. Programmable Logic Controllers: Principles and Applications. 5th ed. Prentice-Hall of India, 2002.