Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.