APA (7th ed.) Citation

The National Computing Centre (Great Britain). (1993). Handbook of data communications (2nd ed.). NCC Blackwell.

Chicago Style (17th ed.) Citation

The National Computing Centre (Great Britain). Handbook of Data Communications. 2nd ed. Manchester: NCC Blackwell, 1993.

MLA (9th ed.) Citation

The National Computing Centre (Great Britain). Handbook of Data Communications. 2nd ed. NCC Blackwell, 1993.

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