APA (7th ed.) Citation

Pritchard, J. A. T. (1979). Security in on-line systems (1. publ.). NCC Publ.

Chicago Style (17th ed.) Citation

Pritchard, John A. T. Security in On-line Systems. 1. publ. Manchester: NCC Publ, 1979.

MLA (9th ed.) Citation

Pritchard, John A. T. Security in On-line Systems. 1. publ. NCC Publ, 1979.