APA (7th ed.) Citation

Pritchard, J. A. T. (1979). Security in on-line systems / by J.A.T. Pritchard. NCC Publications.

Chicago Style (17th ed.) Citation

Pritchard, J. A. T. Security in On-line Systems / by J.A.T. Pritchard. Manchester: NCC Publications, 1979.

MLA (9th ed.) Citation

Pritchard, J. A. T. Security in On-line Systems / by J.A.T. Pritchard. NCC Publications, 1979.

Warning: These citations may not always be 100% accurate.