एपीए उद्धरण

Bytheway, A., & Edwards, C. (1991). Essence of infromation systems. Prentice-Hall of India Private Limited.

शिकागो स्टाइल उद्धरण

Bytheway, Andy, और Chris Edwards. Essence of Infromation Systems. New Delhi: Prentice-Hall of India Private Limited, 1991.

एमएलए उद्धरण

Bytheway, Andy, और Chris Edwards. Essence of Infromation Systems. Prentice-Hall of India Private Limited, 1991.